Determine whether the set W is a subspace of R^3 with the standard operations. If not, state why. (Select all that apply.) W = {(x1, 1/X1, X3): X1 and X3 are real numbers, X1 0} A. Wis a subspace of R3. B. Wis not a subspace of R3 because it is not closed under addition. C. W is not a subspace of R3 because it is not closed under scalar multiplication

Answers

Answer 1

No, In order for a set W is not a subspace of[tex]R^3[/tex]because it does not satisfy the closure property required for a subspace, which is closure under addition and scalar multiplication.

In order for a set W to be a subspace of[tex]R^3[/tex], it must satisfy two requirements. The first requirement is closure under addition, which means that when two elements of W are added together, the resulting sum must also be an element of W. The second requirement is closure under scalar multiplication, which means that when an element of W is multiplied by a scalar, the resulting product must also be an element of W. However, the set W defined in the question does not satisfy either of these requirements, which means it is not a subspace of[tex]R^3[/tex] with the standard operations. For example, when two elements of W are added together, the resulting sum does not necessarily satisfy the constraints of the set W. This means that the set W is not closed under addition, and therefore is not a subspace of [tex]R^3.[/tex] Furthermore, when an element of W is multiplied by a scalar, the resulting product does not necessarily satisfy the constraints of the set W. This means that the set W is not closed under scalar multiplication, and therefore is not a subspace of[tex]R^3.[/tex]

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Related Questions

Sam is going to paint the outside of a cylindrical grain silo. He only needs to paint the lateral surface and roof.

If the radius of the roof is x feet and the silo is y feet high, which expression represents the surface area Sam needs to paint?

a. 2πxy

b. πx^2 + 2πxy

c. 2πx^2 + 2πxy^2


d. 2πx^2 + 2πxy

Answers

The surface area Sam needs to paint on the cylinder is  πx² + 2πxy i.e. B.

What exactly is a cylinder?

In geometry, a cylinder is one of the fundamental 3d forms with two parallel circular bases at a distance. A curving surface connects the two circular bases at a predetermined distance from the centre. The axis of the cylinder is the line segment connecting the centres of two circular bases. The height of the cylinder is defined as the distance between the two circular bases. One real-world example of a cylinder is an LPG gas-cylinder.

Because the cylinder is a three-dimensional form, it has two primary properties: surface area and volume. The cylinder's total surface area (TSA) is equal to the sum of its curved surface area and the area of its two circular bases.

The volume of a three-dimensional cylinder is the space it occupies (V).

TSA=2πr²+2πrh, where r is the radius and h is the height.

Now,

Given that the radius of the roof is x feet and the silo is y feet high

Area of roof=πx² and

curved surface area=2πxy

then the surface area Sam needs to paint=πx²+2πxy

Hence,

        The surface area Sam needs to paint on the cylinder is

πx² + 2πxy.

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Suggest an alternative method we can use to determine the equivalence point if you could not use a colorimetric indicator.

Answers

If a colorimetric indicator is not available, an alternative method for determining the equivalence point in a titration is to use a pH meter.

A pH meter is a device that measures the acidity or basicity of a solution and gives a numerical value for the pH.

In an acid-base titration, the pH of the solution changes as the titrant is added to the analyte. Initially, the pH is determined by the analyte, which is usually acidic. As the titrant is added, it reacts with the analyte to form a neutral or basic solution, and the pH increases. At the equivalence point, all of the analyte has reacted with the titrant.

To use a pH meter to determine the equivalence point, the pH of the solution is monitored as the titrant is added. Initially, the pH is low due to the acidity of the analyte. As the titrant is added, the pH increases, and a sharp increase in pH is observed at the equivalence point.

The advantage of using a pH meter to determine the equivalence point is that it provides a more precise and accurate method than visual indicators, which can be affected by factors such as color blindness or variations in lighting conditions. Additionally, a pH meter can be used for both acid-base and redox titrations.

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which choice is equivalent to the product below? √2•√10•√5

Answers

Answer:

B.10

Step-by-step explanation:

√2.√10.√5

√2.10.5

√100

√2².5²

2.5

10

When conducting a two-sided test of significance, the value of the parameter under the null hypothesis is not plausible and will not be contained in a 95% confidence interval when: A. The p-value is less than or equal to 0.05 B. The p-value is greater than 0.05. C. There is no relationship between the p-value and the con fidence interval.

Answers

The value of parameter under  null hypothesis which is not plausible , will not be contained in a 95% confidence interval when (a) p value is less than or equal to 0.05  .

The "P Value" is  the probability of observing a test statistic as extreme or more extreme than the one computed from the sample data, assuming the null hypothesis is true.

When the p value is less than equal to 0.05 , it indicates that the observed test statistic is statistically significant at the 5% level of significance, means that the null hypothesis will be rejected.

Therefore , the parameter value that is assumed under the null hypothesis is not plausible and is not likely to be in a 95% confidence interval.

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The given question is incomplete , the complete question is

When conducting a two-sided test of significance, the value of the parameter under the null hypothesis is not plausible and will not be contained in a 95% confidence interval when  

(a) The p-value is less than or equal to 0.05

(b) The p-value is greater than 0.05.

(c) There is no relationship between the p-value and the confidence interval.

A rectangle has a perimeter of 74 centimeters.The length of the rectangle is 5 centimeters less than twice the width.What is the area of the rectangle,in square centimeters?

Answers

The area of the rectangle is 322 square centimeters.

Given data :- The perimeter of a rectangle P =74 meter. If the length is 5 meter less than twice it's width.

The dimensions of the rectangle =?

Let assume that the length of the rectangle L = (2x -5)m

And the width of the rectangle W = x meter

Now Perimeter P = 2(L+W)

74 = [2{x+(2x-5)}]

3x-5=37

3x= 42 , x = (42/3)= 14 meter

So the required width of the Rectangle W = 14 meter

Similarly , L = (2*14 - 5) = 23

Now , area of the rectangle = 14*23

Therefore, area of the rectangle = 322

Hence , the area of the rectangle is 322 square centimeters.

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A random sample of 31 charge sales showed a sample standard deviation o $50. A 90% confidence interval estimate of the population standard deviation is:
A 1715.10 - 4055.68
B 1596.45-4466.73
C 39.96-66.83
D 41.39-63.68

Answers

A 90% confidence interval estimate of the population standard deviation is 1596.45-4466.73

We can use the chi-square distribution to construct a confidence interval for the population standard deviation, where the lower and upper limits are given by:

[tex]\sqrt{(n-1)*s^2/chi2(alpha/2,n-1)) }[/tex]         and [tex]\sqrt{(n-1)*s^2/chi2(1-alpha/2,n-1)}[/tex]

Standard Deviation is a measure that shows how much variation (such as spread, dispersion, spread,) from the mean exists.

Where n is the sample size, s is the sample standard deviation, alpha is the significance level, and chi2 is the chi-square distribution function.

Substituting the given values, we get:

Lower limit

= [tex]\sqrt{(31-1)*50^2/chi2(0.05/2,31-1)}[/tex]

= 1596.45

Upper limit

= [tex]\sqrt{(31-1)*50^2/chi2(1-0.05/2,31-1)}[/tex]

= 4466.73

Therefore, a 90% confidence interval estimate of the population standard deviation is 1596.45-4466.73.

Hence, the correct answer is B) 1596.45-4466.73

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Use the Fundamental Counting Principle to find the total number of possible outcomes.

Answers

The number of possible outcomes is given as follows:

18 outcomes.

What is the Fundamental Counting Theorem?

The Fundamental Counting Theorem states that if there are n independent trials, each with [tex]n_1, n_2, \cdots, n_n[/tex] possible results, the total number of outcomes is calculated by the multiplication of the number of outcomes for each trial as presented as follows:

[tex]N = n_1 \times n_2 \times \cdots \times n_n[/tex]

For this problem, we have that:

There are 3 options for the location.There are 6 options for the activity.

Hence the number of outcomes is given as follows:

3 x 6 = 18 outcomes.

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Given g(x) = x² - 8 and h(x) = -6x + 1, what is the correct way to start to find g(h(x))

Answers

The correct way to start finding g(h(x)) is to replace the output of h(x) in

the variables of g(x).

What is a composite function?

When the output of one function is given to the input of another function they are called composite functions.

In (fog)x which is [f{g(x)}] here the out of the function g(x) is the input of the function f(x).

Given, g(x) = x² - 8 and h(x) = - 6x + 1,

Now, g(h(x)) is the output of h(x) is the input of g(h(x)).

Therefore, g(h(x)) is g(- 6x + 1) = (- 6x + 1)² - 8.

g(h(x)) = - (6x - 1)² - 8.

g(h(x)) = - (36x² - 12x + 1) - 8.

g(h(x)) = - 36x² + 12x - 1 - 8.

g(h(x)) = - 36x² + 12x - 9.

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Which expression is equivalent to √64 a6

Answers

Answer:

√64 a⁶

or, √2⁶a⁶

or, √(2a)⁶

or, (2a)³

=8a³

for
6. Tami multiplies two fractions. The first fraction is greater than -1 but less than 0. The
notei
second fraction is greater than 0 but less than 1.
Which statement describes the product of the two fractions Tami multiplied?

Answers

The product of the two fractions Tami multiplied will be a negative number between 0 and -1.

How to find the product of the multiplication

Since the first fraction is negative greater than -1 but less than 0

and the second fraction is positive, greater than 0 but less than 1, their product will be negative.

This is because when a negative number multiplies a positive number the product is a negative number

Moreover, since both numbers are in fraction and less than whole their multiplication will also be a reduction tending towards zero

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(b) the weights of the empty cardboard containers have a mean of 20 grams and a standard deviation of 1.7 grams. it is reasonable to assume independence between the weights of the empty cardboard containers and the weights of the eggs. it is also reasonable to assume independence among the weights of the 12 eggs that are randomly selected for a full carton. let the random variable x be the weight of a single randomly selected grade a egg.

Answers

0.1038 is the probability that a randomly selected full carton of Grade A eggs will weigh more than 850 grams.

0.413 is the mean of X?

0.643 is the standard deviation of X

As per the data given:

Each full carton of Grade A eggs consists of 1 randomly selected empty cardboard container and 12 randomly selected eggs.

The weights of such full cartons are approximately normally distributed with a mean of 840 grams and a standard deviation of 7.9 grams.

[tex]\mu=840[/tex]

[tex]\sigma = 7.9[/tex]

(a) Here we have to determine the probability that a randomly selected full carton of Grade A eggs will weigh more than 850 grams

Here, a full carton [tex]$y \sim N(840,7.9)$[/tex]

[tex]& \mu=840 \\[/tex]

As, z = [tex]$ \frac{y-840}{7.9} \sim N(0.1) \\[/tex]

[tex]$P(y > 850)= & P\left(z > \frac{850-840}{7.9}\right)=1-P(z < 1.26) \\[/tex]

[tex]= & 1-\phi(1.26) \\[/tex]

= 1 - 0.8962

= 0.1038

(b) Here, B is the weight of the carton [tex]$\sim N(20,1.7)$[/tex]

Weight of each egg [tex]$x=\frac{y-B}{12} \\[/tex]

[tex]& x \sim N\left(\frac{1}{12}(\epsilon(y)-\epsilon(B)), a\right)^{\prime}[/tex]

Here we have to determine the mean of x

Here [tex]$ \epsilon(x)=\epsilon \frac{\epsilon(y)-\epsilon(B)}{12} \\[/tex]

[tex]$ =\frac{840-20}{12} \\[/tex]

[tex]$& =\frac{820}{12} \\[/tex]

[tex]\epsilon(x) & =68.33 \\[/tex]

[tex]\alpha^2=v(x) & =\left(\frac{1}{12}\right)^2[v(y)-v(B)][/tex] as independent

[tex]$& =\frac{1}{12^2}\left[(7.9)^2-(1.7)^2\right][/tex]

[tex]$& =\frac{1}{144}[62.41-2.89] \\[/tex]

[tex]$ & =\frac{1}{144}[59.52] \\ &[/tex]

= 0.413

(ii) Here we have to determine the standard deviation

[tex]\sigma =\sqrt{0.413} \\ &[/tex]

[tex]\sigma[/tex] = 0.643

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Each full carton of Grade A eggs consists of 1 randomly selected empty cardboard container and 12 randomly selected eggs. The weights of such full cartons are approximately normally distributed with a mean of 840 grams and a standard deviation of 7.9 grams.

(a) What is the probability that a randomly selected full carton of Grade A eggs will weigh more than 850 grams?

(b) The weights of the empty cardboard containers have a mean of 20 grams and a standard deviation of 1.7 grams. It is reasonable to assume independence between the weights of the empty cardboard containers and the weights of the eggs. It is also reasonable to assume independence among the weights of the 12 eggs that are randomly selected for a full carton.

Let the random variable X be the weight of a single randomly selected Grade A egg.

i) What is the mean of X?

ii) What is the standard deviation of X?

Kendra and Allen Tovsky have a combined income of $142,573. They have 1099 forms which report $650 in dividends. They also have $8,500 in income from rental property. They are able to reduce their income by $12,500. What is their adjusted gross income?

Answers

Kendra and Allen Tovsky's adjusted gross income is $139,223.

What is Adjusted Gross Income (AGI)?

Adjusted Gross Income (AGI) is defined as an individual's gross income minus various adjustments made to that income, such as trade and business deductions.

To calculate Kendra and Allen Tovsky's adjusted gross income (AGI), we need to start with their total income and subtract any deductions or adjustments they are eligible for.

Their total income is:

Combined income: $142,573

Dividends: $650

Rental income: $8,500

Total income before deductions: $151,723

Next, we need to subtract their eligible deductions. In this case, they are able to reduce their income by $12,500, which could include things like contributions to a retirement account or health savings account, self-employed expenses, or student loan interest payments. Let's assume that the full $12,500 deduction applies to their situation.

Adjusted gross income calculation:

Total income before deductions: $151,723

Minus eligible deductions: $12,500

Adjusted gross income: $139,223

Therefore, Kendra and Allen Tovsky's adjusted gross income is $139,223.

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Amplitude is ______.

the maximum displacement of a function on a graph
the minimum displacement of a function on a graph

Answers

Amplitude is the maximum displacement of a function on a graph.

What is amplitude?

Amplitude is the maximum displacement of a function on a graph. It refers to the maximum height or distance from the baseline of a wave or oscillation.

It is often used in physics and engineering to describe the strength or size of a signal, vibration, or wave. In simple terms, it can be thought of as the "peak-to-peak" distance of a waveform, or the height of the waveform above and below the baseline.

But the minimum displacement of a function on a graph would typically be referred to as the minimum value or the "valley" of the function.

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Explain how the tiles show that 2s + 3s² is not
equivalent
to 5s.

Answers

The size of s² blocks is larger than that of blocks of s and this shows that the expressions 2s+3s² is not equivalent to 5s.

What is an expression?

An expression is a combination of terms that are combined by using mathematical operations such as subtraction, addition, multiplication, and division.

The given expressions are 2s+3s² and 5s.

Here, 2s+3s²≠5s

Substitute s=-1 in 2s+3s²≠5s, we get

2(-1)+3(-1)²≠5(-1)

1≠-5

Substitute s=2 in 2s+3s²≠5s, we get

2(2)+3(2)²≠5(2)

16≠10

Therefore, the size of s² blocks is larger than that of blocks of s and this shows that the expressions 2s+3s² is not equivalent to 5s.

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"Your question is incomplete, probably the complete question/missing part is:"

Is 2s+3s² equivalent to 5s? Use math tiles to model 2s+3s² and 5s.

s+s          s²+s²+s²     s+s+s+s+s

2s               3s²                5s

The expression 2s+3s² is not equivalent to 5s. Explain how that tiles show that 2s+3s² is not equivalent to 5s.

Determine which of the following transformations are linear transformations
A. The transformation T1
defined by T1(x1,x2,x3)=(x1,0,x3)
B. The transformation T2
defined by T2(x1,x2)=(2x1−3x2,x1+4,5x2)
.
C. The transformation T3
defined by T3(x1,x2,x3)=(x1,x2,−x3)
D. The transformation T4
defined by T4(x1,x2,x3)=(1,x2,x3)
E. The transformation T5
defined by T5(x1,x2)=(4x1−2x2,3|x2|)
.

Answers

The transformation T1 defined by T1(x1,x2,x3)=(x1,0,x3) is linear transformation among the five given questions.

A linear transformation satisfies two properties: additivity and homogeneity. That is, for any vectors u and v, and any scalars a and b:

T(u + v) = T(u) + T(v)

T(au) = aT(u)

Using these properties, we can determine which of the given transformations are linear transformations:

A. The transformation T1 defined by T1(x1,x2,x3)=(x1,0,x3)

T1(u+v) = (u1+v1, 0, u3+v3) = (u1, 0, u3) + (v1, 0, v3) = T1(u) + T1(v)

T1(au) = (au1, 0, au3) = a(u1, 0, u3) = a*T1(u)

Therefore, T1 is a linear transformation.

The transformation T2 defined by T2(x1,x2)=(2x1−3x2,x1+4,5x2)

T2(u+v) = (2(u1+v1)−3(u2+v2), u1+v1+4, 5(u2+v2))

= (2u1−3u2, u1+4, 5u2) + (2v1−3v2, v1+4, 5v2) = T2(u) + T2(v)

However, T2 does not satisfy homogeneity property. Consider a = -1 and u = (1, 1):

T2(-u) = (-2, 5, -5)

-1*T2(u) = (-2, -5, -5)

Therefore, T2 is not a linear transformation.

The transformation T3 defined by T3(x1,x2,x3)=(x1,x2,−x3)

T3(u+v) = (u1+v1, u2+v2, -(u3+v3)) = (u1, u2, -u3) + (v1, v2, -v3) = T3(u) + T3(v)

T3(au) = (au1, au2, -au3) = a*(u1, u2, -u3) = a*T3(u)

Therefore, T3 is a linear transformation.

The transformation T4 defined by T4(x1,x2,x3)=(1,x2,x3)

T4(u+v) = (1, u2+v2, u3+v3) ≠ (1, u2, u3) + (1, v2, v3) = T4(u) + T4(v)

T4(au) = (1, au2, au3) ≠ a(1, u2, u3) = a*T4(u)

Therefore, T4 is not a linear transformation.

The transformation T5 defined by T5(x1,x2)=(4x1−2x2,3|x2|)

T5(u+v) = (4(u1+v1)−2(u2+v2), 3|u2+v2|)

= (4u1−2u2, 3|u2|) + (4v1−2v2, 3|v2|) ≠ T5(u) + T5(v)

T5(au) = (4au1−2au2, 3|au2|) ≠ a*T5(u)

Therefore, T5 is not a linear transformation.

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Mr. Adams has a circular flower bed with a
diameter of 2 feet. He wishes to increase the size of this bed so that it will have nine times as much planting area. What must be the diameter of the new bed?
(F) 6 feet
(G) 8 feet
(H) 12 feet
(J) 16 feet
(K) none of these

Please Help!!!

Answers

The area of a circle is given by the formula A = πr^2, where A is the area and r is the radius. The diameter of the original flower bed is 2 feet, which means the radius is 1 foot. The area of the original flower bed is:

A = πr^2
A = π(1^2)
A = π

To increase the planting area by a factor of 9, we need a new area of:

9A = 9π

To find the radius of the new flower bed, we can use the formula for the area of a circle again:

9π = πr^2
9 = r^2
r = 3

So the radius of the new flower bed is 3 feet, which means the diameter is:

D = 2r = 2(3) = 6 feet

Therefore, the diameter of the new bed is 6 feet, which corresponds to answer choice (F).

Answer: (F) 6 feet

Step-by-step explanation:

The area of a circle is proportional to the square of its radius. So if we increase the diameter of the flower bed by a factor of x, its area will increase by a factor of x^2. We want to find the diameter of the new bed that will have nine times the planting area of the old bed.

Let d be the diameter of the new bed. Then its radius is r = d/2, and its area is A = πr^2. We want:

9A = π(D/2)^2

where D is the diameter of the old bed. Substituting r = D/2, we get:

9A = π(D/2)^2

= πr^2

So we can solve for d by equating the right-hand sides and taking the square root:

9πr^2 = πd^2

d^2 = 9r^2

d = 3r

Therefore, the diameter of the new bed must be three times the diameter of the old bed. The diameter of the old bed is 2 feet, so the diameter of the new bed is 3 times that, or 6 feet.

determine the volume of a solid formed by revolving the region bounded by the curve , the line , and the line about the line .

Answers

The value of V = 2π/3. To find the volume of the solid, we need to use the method of cylindrical shells.

First, we need to solve for the x and y intercepts of the curve. Setting x = 0 gives y = 0, and setting y = 0 gives x = ±1. So the curve intersects the x-axis at (-1, 0) and (1, 0).

Next, we need to find the height of each cylindrical shell. The height is given by the difference between the y-values of the curve and the line x = 1. Solving for y in 2xy = 1 + x^2, we get y = (1 + x^2)/(2x). So the height of the cylindrical shell at x is given by (1 + x^2)/(2x).

Finally, we need to find the radius of each cylindrical shell. The radius is simply x.

So the volume of the solid is given by the integral from x = 0 to x = 1 of 2πx(1 + x^2)/(2x) dx. Simplifying and integrating, we get V = 2π/3.

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Complete Question:

Find the volume of the solid formed by revolving the region bounded by the curve 2x y = the line 1 + x2 y = 0, and the line x = 1 about the y-axis. V=?

A new therapy for Psoriasis is being tested and subjects have their PASI score taken before and after treatment. The distribution of their scores are shown in the following boxplot: A. Find the approximate 25th percentile (___), median (___), and 75th percentile (____) for the PASI scores pre treatment. B. Find the approximate 25th percentile ), median ), and 75th percentile ) for the PASI scores post treatment C. The effectiveness (i.e. the lower the score, the better) of the therapy is O A. Based on the post-treatment median being much lower than the median at baseline, the treatement appears to be ineffective OB. Based on the post-treatment median being much higher than the median at baseline, the treatement appears to be effective O C. Based on the post-treatment median being much lower than the median at baseline, the treatement appears to be effective OD. Based on the post-treatment median being much higher than the median at baseline, the treatement appears to be ineffective

Answers

The answer is option (C) based on the post-treatment median being much lower than the median at baseline, the treatment appears to be effective.

A) To find the approximate 25th percentile, median, and 75th percentile for the PASI scores pre-treatment, we can look at the boxplot. The box in the plot represents the middle 50% of the data, and the line inside the box represents the median. The whiskers show the range of the data, and any points outside of the whiskers are considered outliers.

From the given boxplot, we can see that the median is around 13, the 25th percentile is around 9, and the 75th percentile is around 19 for the PASI scores pre-treatment.

B) To find the approximate 25th percentile, median, and 75th percentile for the PASI scores post-treatment, we can again look at the boxplot.

From the given boxplot, we can see that the median is around 4, the 25th percentile is around 2, and the 75th percentile is around 8 for the PASI scores post-treatment.

C) The effectiveness of the therapy can be determined by comparing the pre-treatment and post-treatment PASI scores. As the goal is to have lower PASI scores post-treatment, a lower median PASI score post-treatment as compared to pre-treatment is an indication of the effectiveness of the therapy. Therefore, based on the post-treatment median being much lower than the median at baseline, the treatment appears to be effective.

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Determine whether watch triangle should be solved by law of singes or law or cosines and Solve the triangle

Answers

Using the law of cosines, as we have two sides and an angle, the length b is given as follows:

b = 17.92.

What is the law of cosines?

The law of cosines states that we can find the side c of a triangle as follows:

c² = a² + b² - 2abcos(C)

In which:

C is the angle opposite to side c.a and b are the lengths of the other sides.

For this problem, the length b is opposite to the angle of 47º, hence it is obtained as follows:

b² = 20² + 24² - 2 x 20 x 24 x cosine of 47 degrees

b² = 321.28

b = sqrt(321.28)

b = 17.92.

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A system of two linear equations in two variables is shown on the coordinate grid.
10
8
6
*
10-8-6-4-2 2 4 6 8 10
-2
-6
A
69
Which system of equations does the graph represent?

Answers

The graph of the two linear functions is f(x) = 2x and f(x) = x.

What are the three types of solutions for a system of linear equations?

If a system of equations only contains two linear equations with two variables, the system's equation can be graphed, the graph will have two straight lines, and the intersection point(s) of those lines will be the system's solution.

There are only three matching forms of solution for a given system of equations because there are only three different ways that two straight lines in the plane can graph.

Let, The first table be,

x = 2  4  6  8.

y = 4  8  12  16.

We can observe that when x = 2, y = 4, and when x = 4 y = 8.

Therefore, The equation is y = 2x.

The second table is,

x = 1  2  3  4.

y = 1  2  3  4.

Here, y is equal to x, Therefore, The equation is y = x.

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Figure order is a rectangle what are the coordinates of point Q

Answers

The coordinates of point Q in the rectangle named QRST is (5, 5).

What are Coordinates?

A pair of numbers called coordinates are used to locate a point or a form in a two-dimensional plane. The x-coordinate and the y-coordinate are two numbers that define a point's location on a 2D plane.

Given:

We have the Graph having coordinate T(5, 2).

and, length of QT = 3 unit

As, the vertical distance shows the y coordinate then the y coordinate of Q is 3.

and, the x coordinate is same as T.

Then, the Coordinate of Q is (5, 2+3) or (5, 5).

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The table shows the number of brothers and sisters of the students in year 7.
What percentage of students have more than 1 brother or sister?
Number of brothers and sisters
Year 7 Male students
Year 7 Female students
1
62
118
2
24
3
8
14
4
6
104
200

Answers

The percentage of students with more than 1 brother or sister is 41%.

How to calculate percentage?

To find the percentage, first complete the table:

118 - 62 = 56 female students with 1 brother and sister.
8 + 14 = 22 7th years with 3 brothers and sisters.
118 + x + 22 + 6 = 200, x = 200 - 146, x = 54 7th years with 2 brothers and sisters.
54 - 24 = 30 male students with 2 brothers and sisters.
62 + 30 + 8 + y = 104, y = 104 - 100, y = 4 male students with 4 brothers and sisters.
6 - 4 = 2 female students with 4 brothers and sisters.
56 + 24 + 14 + 2 = 96 total female students of 7th year.

The percentage of students with more than i brother and sister is:

54 + 22 + 6 = 82 students or 200 - 118 = 82 students.

% = 82 / 200 x 100 = 41%.

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A store manager instructs some new trainees that a measuring tape priced at $3 winds up costing a customer $3.24 once the sales tax is included. What is the sales tax percentage?

Answers

Answer: To find the sales tax percentage, we can start by subtracting the cost of the item itself from the total cost with tax included.

In this case, the cost of the item is $3, and the total cost with tax included is $3.24, so:

$3.24 - $3 = $0.24

Next, we can divide the amount of sales tax by the cost of the item, and multiply by 100 to find the percentage:

$0.24 ÷ $3 × 100 = 8%

So the sales tax percentage is 8%.

Step-by-step explanation:

Answer:

Step-by-step explanation:

$3 item

h = 100 *  3.24 - 3/ 3  =  24/3  = 8 1  = 8%

Sales tax percentage is = 8%

23

Referring to the Fig. in Question #23, find the cosine of angle R.
Reduce the answer to the lowest terms.

24
Referring to the Fig. in Question #23, find the tangent of angle R.
Reduce the answer to the lowest terms.

Answers

The  cosine of angle R is 3/5 and tangent of angle R is 4/3.

What is Trigonometry?

Trigonometry is a branch of mathematics that studies relationships between side lengths and angles of triangles.

The given right triangle is RTS.

We have to find the cosine of angle R

We know that cos theta = Adjacent side/hypotenuse.

CosR=6/10

=3/5

Now let us find tangent of angle R

Tan theta = opposite side/adjacent side

=8/6

=4/3

Hence, the  cosine of angle R is 3/5 and tangent of angle R is 4/3.

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Levels of Measurement!
What type of measure scale is being used? Nominal, Ordinal, interval or Ratio.
1. A satisfaction survey of a social website by number:
1 = very satisfied, 2 = somewhat satisfied, 3 = not satisfied.
2. The colors of crayons in a 24-crayon box.
3. Baking temperatures for various main dishes: 350, 400, 325, 250, 300
4. The distance in miles to the closest grocery store.
5. High school men soccer players classified by their athletic ability:
Superior, Average, Above average.

Answers

1) A satisfaction survey of a social website by number is Ordinal.

2) The colors of crayons in a 24-crayon box are nominal.

3) The baking temperatures for various main dishes are interval.

4) The distance in miles to the closest grocery store is Ratio

5) High school men soccer players classified by their athletic ability are Ordinal.

The satisfaction survey scale is ordinal since the numbers are used to indicate the order of satisfaction (i.e., very satisfied is higher than somewhat satisfied, which is higher than not satisfied), but the difference between each level is not known.

The colors of crayons are nominal since they are categorical and do not have an inherent order or numeric value.

The baking temperatures are interval, as the differences between the values are meaningful, but there is no true zero point (i.e., 0 degrees does not indicate the absence of temperature).

The distance to the closest grocery store is ratio, as it has a true zero point (i.e., 0 miles means no distance), and the differences between distances are meaningful and measurable.

The classification of high school soccer players by athletic ability is ordinal since the categories are ordered, but the differences between them are not known.

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how to get ever answer on online school​

Answers

Getting the correct answer in an online school environment can be achieved through a few methods:

Read the course materials carefully: Make sure you understand the material being covered before attempting to answer questions.

Participate in online discussions: If you have questions, participate in online discussions with your classmates or instructors. This can help you better understand the material and get clarification on any points you are unsure about.

Utilize online resources: Many online schools provide access to online resources such as videos, tutorials, and practice quizzes. These can help you reinforce your understanding of the material and prepare for exams.

Ask for help: If you are still having trouble finding the correct answer, don't be afraid to reach out to your instructor or classmates for help.

Use additional study materials: Consider using outside study materials such as textbooks, study guides, and online resources to help you better understand the material.

Remember, the key to success in online school is to stay organized, be proactive, and actively engage with the course materials and your classmates. Good luck!

Getting every answer in an online school course depends on several factors, including the format of the course, the resources available, and the instructor's teaching style. Here are some tips that may help:

Utilize course resources: Most online courses provide students with a variety of resources such as textbooks, lectures, discussion forums, and quizzes. Utilize these resources to gain a deeper understanding of the material.

Participate in discussions: Participating in online discussions can be an excellent way to get answers to questions you have about the course material. You can also collaborate with other students to gain a better understanding of the course content.

Ask the instructor: If you're still unsure about a particular topic, don't be afraid to reach out to your instructor for clarification. You can send an email, participate in virtual office hours, or use a discussion forum to ask questions.

Research outside sources: You can also conduct research outside of the course to supplement your understanding of the material. Search for reputable sources, such as academic journals, to gain a better understanding of the course content.

Form a study group: If you're taking the course with other students, consider forming a study group. Studying with others can be an effective way to get answers to questions you have and to collaborate on course assignments.

Remember, the key to getting every answer in an online course is to be an active and engaged learner. Utilize all the resources available to you and don't be afraid to ask for help when needed.

Which function is most likely graphed on the coordinate plane below?
f(x) = 3x – 11 f(x) = –4x + 12 f(x) = 4x + 13 f(x) = –5x – 19

Answers

The graph given is of the function f(x) = –5x – 19

What is a function?

A function is a relation from a set of inputs to a set of possible outputs where each input is related to exactly one output.

Given is a graph, we need to determine the graph belongs to which function,

From the figure it is noticed that the f(x) is a straight line, so it must be in the form of,

f(x) = ax+b

Where, a coefficient of x and b are constants.

From the graph it is noticed that as the value of x increases the value f(x) decreases. It means the function have negative slope and the coefficient of x must be negative.

The function intersect the y-axis at below the origin. It means the value of b must be negative.

The sign of both constant and coefficient are negative. According to this statement the correct option is D.

In function f(x) = –5x – 19 both constant and coefficient are negative.

Put x=0, we get f(x)=-19, so the y-intercept is (0,-19).

Put f(x)=0, we get x = -19/5, so the x-intercept is (-19/5, 0).

Since both x and y intercepts are negative,

Therefore, option D is correct.

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A conservation organization releases 35 Florida panthers into a game preserve. After 2 years, there are 200 panthers in the preserve. The Florida preserve has a carrying capacity of 560 panthers.(a) Write a logistic equation that models the population of panthers in the preserve. (Round your k to four decimal places. Use t for the time in years.)P = _____(b) Find the population after 5 years. (Round your answer to the nearest whole number.)_____ panthers(c) When will the population reach 280? (Round your answer to two decimal places.)_____ yr(d) Write a logistic differential equation that models the growth rate of the panther population. Then using Euler's Method, repeat part (b) with a step size of h = 1. Use the initial release population of 35 panthers as your initial value to start Euler's Method. (Round your answer to the nearest whole number.)dP/dt =P(5) ≈(e) At what time is the panther population growing most rapidly? (Round your answer to two decimal places.)_____ yr

Answers

(a) P = [tex](56035e^(0.3283t)) / (560 + 35(e^(0.3283t)-1))[/tex] (b) 345 panthers (c) 1.59 years (d) dP/dt = kP(1 - P/560), P(5) ≈ 373 panthers (e) 1.59 years.

(a) The logistic equation that models the population of panthers in the preserve is:

P = [tex](560P0e^{(kt)}) / (560 + P0(e^{(kt)-1}))[/tex]

where P0 is the initial population (35), k is the growth rate constant, and t is the time in years.

To solve for k, we can use the fact that after 2 years the population is 200:

200 =[tex](56035e^(2k)) / (560 + 35(e^{(2k)-1}))[/tex]

Solving for k, we get:

k = 0.3283 (rounded to 4 decimal places)

Therefore, the logistic equation is:

P = (56035e^(0.3283t)) / (560 + 35(e^(0.3283t)-1))

(b) To find the population after 5 years, we substitute t=5 into the logistic equation:

P = (56035e^(0.32835)) / (560 + 35(e^(0.32835)-1))

P ≈ 345 panthers (rounded to the nearest whole number)

(c) To find when the population reaches 280, we can solve the logistic equation for t when P=280:

280 = [tex](56035e^{(0.3283t)}) / (560 + 35(e^{(0.3283t)-1}))[/tex]

Solving for t, we get:

t ≈ 1.59 years (rounded to 2 decimal places)

(d) The logistic differential equation that models the growth rate of the panther population is:

dP/dt = kP(1 - P/560)

Using Euler's method with a step size of h=1, we get:

P(5) ≈ P(4) + hdP/dt(4)

P(4) = 345 (from part b)

dP/dt(4) = k345*(1 - 345/560) = 27.522

P(5) ≈ 345 + 27.522 = 373 panthers (rounded to the nearest whole number)

(e) The panther population is growing most rapidly when the growth rate is at its maximum, which occurs at half the carrying capacity (P=280). We can find the time by taking the derivative of the logistic equation and setting it equal to zero:

dP/dt = kP(1 - P/560)

0 = k280(1 - 280/560)

0.5 = 1 - 280/560

280 = 560/2

So, the panther population is growing most rapidly when P=280, which occurs at half the carrying capacity. Therefore, the time when the population is growing most rapidly is at t=1.59 years (from part c).

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Evaluate 2x + 3y if x =2 and y = 8

Answers

2(2)+3(8)
4 + 3 x 8
4 + 24
28

What’s 10 more than triple P

Answers

The value of mathematical expression is,

⇒ 10 + 3P

What is Mathematical expression?

Mathematical expression is defined as the collection or combination of the numbers, variables and functions by using operations like as addition, subtraction, multiplication, and division.

Given that;

The expression is,

⇒ 10 more than triple P.

Now, We can simplify mathematical expression as;

Triple P = 3P

Hence, We get the expression as;

⇒ 10 more than triple P.

⇒ 10 + 3 × P

⇒ 10 + 3P

Therefore, We get;

The value of mathematical expression is,

⇒ 10 + 3P

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