y = x - 11
7x+7y=-21
systems of equations by substitution ​

Reflect it across the x-axis, then translate it up 6 units and left 1 unit before reflecting it across the y-axis.

You should be aware that a collection of numbers, or "terms," is referred to as a sequence. Examples of terms include 2, 5, and 8. Some sequences can be made endlessly long by taking advantage of a particular pattern they follow. Use the example of 2,5,8 and add 3 to continue the series. There are formulas that demonstrate where to look for words within a sequence. A collection of objects that are in some order is known as a sequence in mathematics (or events). It resembles a set in that it has pieces (also called elements or terms). The total, perhaps infinite number of ordered objects are referred to as the sequence's length. the act of placing two or more objects in a logical order.

We are given the following

Δ DOG and ΔCAT

According to Chanel, the series of transformations that maps triangle ABC onto triangle DEF is as follows:

Reflect it across the x-axis, then translate it up 6 units and left 1 unit before reflecting it across the y-axis.

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Step-by-step explanation:

The charge of Company B is $65.50 + 0.14x and the charge of Company A is $45.50 + 0.11x.

So, the difference is $65.50 + 0.14x - ($45.50 + 0.11x) = $20 + 0.03x dollars more than Company A.

The best estimate for the African lion population is 14 individuals.

The best estimate for the African lion population can be found using the Lincoln-Petersen index, which is a commonly used method for estimating fish or wildlife populations.

The formula for the Lincoln-Petersen index is:

N = (2 x tagged individuals caught) / (total tagged individuals + total untagged individuals caught)

Plugging in the given values:

N = (2 x 8) / (20 + 160) = 16 / 180 = 0.089

Multiplying N by the number of lions caught (160) will give us the best estimate for the African lion population:

African lion population = N x 160 = 0.089 x 160 = 14.24 (rounded to the nearest whole number, 14)

Therefore, the best estimate for the African lion population is 14 individuals.

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Line 1 and line 3 are parallel and line 1 and line 2 are perpendicular.

What is a System of Equations?

A system of equations in algebra is made up of two or more equations that are solved together. "A group of equations satisfied by the same set of variables are called a system of linear equations. Finding the values of the variables employed in the system of equations is the first step towards solving it. While maintaining the balance of the equations on both sides, we compute the values of the unknown variables. Finding a variable whose value makes the condition of all the given equations true is the primary goal of solving an equation system.

y = -5/2 x -1

4x-10y = 8

2y = -5x+7

line 1, m = -5/2

line 2, m = 2/5

line 3, m -5/2

Hence, Line 1 and line 3 are parallel and line 1 and line 2 are perpendicular.

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Answer:

17 years & 9 months

Step-by-step explanation:

annual rate 3.9%

every quarter = 3.9%/4 = 0.98%

compounding every quarter = (1+0.98%)

how long = assuming t quarters

2000 * (1+0.98%) ^t = 4000

solve for t

t= 71

so 71/4 = 17 years & 9 months

The measure of each Angle is 80, 50 and 50 degree.

Angle sum property of triangle states that the sum of interior angles of a triangle is 180°.

Given:

<H= 4x- 20

and, <G = 2x

and, <I = 2x

Now, In triangle GHI using Angle Sum Property

<G+ <H+ <I= 180

4x- 20 + 2x+ 2x = 180

8x - 20 = 180

8x = 200

x= 25

So, the measure of <G = 4x- 20 = 100 -20 = 80 degree.

and, <H = <I= 2x= 2(25)= 50 degree

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The proportion of temperatures between 17.02°C and 25°C is 0.9539

The term "standard deviation" (or "σ") refers to a measurement of the data's dispersion from the mean.

A low standard deviation implies that the data are grouped around the mean, whereas a large standard deviation shows that the data are more dispersed.

Given:

mean = 21.02points and

standard deviation =  points.

Now, using

z= (x-u)/σ

z= 17.02 - 21.02/ 2

z= -2

again, z= (x-u)/σ

z= 25- 21.02 / 2

z= 1.99

So, the proportion is

P(x<108.20)-P(x<104.60)

=P(Z<2.65)-P(Z<2.2)

= 0.9497 -0.0228

=0.9539

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Answer: The transformation matrix R for a rotation of 120° about an axis from the origin through the point (1,1,1) can be calculated using the formula:

R = I + (sin(θ))U + (1-cos(θ))UU'

where θ is the angle of rotation (120° in this case), I is the identity matrix, U is a skew-symmetric matrix, and U' is its transpose. The skew-symmetric matrix can be calculated as follows:

U = [0, -z, y; z, 0, -x; -y, x, 0]

where x, y, and z are the components of the vector (1,1,1) that defines the axis of rotation.

Plugging in the values and simplifying, the transformation matrix R is:

R = [ cos(120°), -sin(120°), 0; sin(120°), cos(120°), 0; 0, 0, 1 ]

Note: cos(120°) = -1/2 and sin(120°) = √(3)/2.

Step-by-step explanation:

The missing sides of the triangles are:

NUMBER 6 and 7: x = 12√2 units, y = 12√2 units

NUMBER 8 and 9: x = 25 units, y = 25√3 units

Trigonometry is a branch of mathematics dealing with the relationship between the ratios of the sides of a right-angled triangle with its angles.

NUMBER 6 and 7

sin 45° = x/24

x = 24 * sin 45°

x = 24 * (√2)/2

x = 12√2 units

sin 45° = y/24

y = 24 * sin 45°

y = 24 * (√2)/2

y = 12√2 units

NUMBER 8 and 9

sin 30° = x/50

x = 50 * sin 30°

x = 50 * 1/2

x = 25 units

sin 60° = y/50

y = 50 * sin 60°

y = 50 * (√3)/2

y = 25√3 units

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The mean of the sampling distribution is 120

And the standard deviation of the sampling distribution of the mean using sample size of:

a) n = 16 ⇒ [tex]\sigma_{\bar{x}}[/tex] = 5

b) n = 25 ⇒  [tex]\sigma_{\bar{x}}[/tex] = 4

c) n = 36 ⇒  [tex]\sigma_{\bar{x}}[/tex] = 3.33

d) n = 100 ⇒  [tex]\sigma_{\bar{x}}[/tex] = 2

We know that for a normally distributed population, the sample mean is also normally distributed.

The sample mean is:

[tex]\mu_{x}[/tex] = μ

where μ is the population mean.

Here, the population is normally distributed with μ = 120

So, the mean of the sampling distribution for any sample size would be, [tex]\mu_{x}[/tex] = 120

As we know the formula for the standard deviation of the sample mean is:

[tex]\sigma_{\bar{x}}[/tex] = σ/[tex]\sqrt{n}[/tex]

where,  [tex]\sigma_{\bar{x}}[/tex]  is the Standard deviation of the sample mean

σ is the population standard deviation

n is the Sample size.

Here, σ = 20

Using above formula of the standard deviation of the sample mean,

For sample size n = 100

[tex]\sigma_{\bar{x}}[/tex] = 20/[tex]\sqrt{(100)}[/tex]

[tex]\sigma_{\bar{x}}[/tex] = 20/10

[tex]\sigma_{\bar{x}}[/tex] = 2

For sample sizen = 16

[tex]\sigma_{\bar{x}}[/tex] = 20/[tex]\sqrt{16}[/tex]

[tex]\sigma_{\bar{x}}[/tex] = 20/4

[tex]\sigma_{\bar{x}}[/tex] = 5

for sample size n = 25

[tex]\sigma_{\bar{x}}[/tex] = 20/[tex]\sqrt{25}[/tex]

[tex]\sigma_{\bar{x}}[/tex] = 20/5

[tex]\sigma_{\bar{x}}[/tex] = 4

For the sample size n = 36

[tex]\sigma_{\bar{x}}[/tex] = 20/[tex]\sqrt{36}[/tex]

[tex]\sigma_{\bar{x}}[/tex] = 20/6

[tex]\sigma_{\bar{x}}[/tex] = 3.33

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The number of non-real solutions is 2.

What is a quadratic equation?

The quadratic equation a equation in one variables whose power is 2. The solution of the quadratic equation can be found by equation the equation to 0 and then factoring it.

We are given a equation -3n^2-2n-6=0

To find the non-zero solution we first find the solution of the equation

we get

3n^2+2n+6 =0

We use the formula method to find the roots of the equation

[tex]n= \frac{-b}{2a}[/tex]±[tex]\frac{\sqrt{b^2-4ac} }{2a}[/tex]

Substituting the values in the equation we get

n = -0.33333333333333 + 1.3743685418726i  and

n = -0.33333333333333 - 1.3743685418726i

Both the roots has i in them. it means both the roots are imaginary

Hence the number of complex roots are 2

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The correct statement comparing the values of the 8s in 2,7812 and 94894 is that the 8 in 2,7812 has a greater value than the 8 in 94894.

This is because the value of a digit in a number is determined by its place value. In the number 2,7812, the 8 is in the hundreds place, meaning it has a value of 800. In the number 94894, the 8 is in the tens place, meaning it has a value of 80.

Therefore, the 8 in 2,7812 has a greater value (800) than the 8 in 94894 (80).

Here is the answer in HTML format:

The correct statement comparing the values of the 8s in 2,7812 and 94894 is that the 8 in 2,7812 has a greater value than the 8 in 94894.

This is because the value of a digit in a number is determined by its place value. In the number 2,7812, the 8 is in the hundreds place, meaning it has a value of 800. In the number 94894, the 8 is in the tens place, meaning it has a value of 80.

Therefore, the 8 in 2,7812 has a greater value (800) than the 8 in 94894 (80).

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Answer: 22v-4

Step-by-step explanation: four less than means subtract and product means multiply

The final amount momentum of the t-shirt is 17.5 kg⋅m/s, which is the sum of the initial momentum of the t-shirt (2 kg⋅m/s) and the change in momentum (15.5 kg⋅m/s) due to the force applied.

The final amount momentum of the t-shirt is 17.5 kg⋅m/s, which is calculated by summing the initial momentum of the t-shirt (2 kg⋅m/s) and the change in momentum (15.5 kg⋅m/s) due to the force applied. Momentum is a vector quantity which is equal to the product of the mass and velocity of an object. In this case, the t-shirt has a mass of 4 kg and a velocity of 4 m/s. The force of 15 N applied to the t-shirt for 3 seconds causes the t-shirt to accelerate, increasing its velocity from 4 m/s to 8 m/s. This increase in velocity results in an increase in the momentum of the t-shirt from 2 kg⋅m/s to 17.5 kg⋅m/s. Thus, by calculating the change in momentum due to the applied force, we can determine the final momentum of the t-shirt.

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The area of the shaded region is 24x² - 78x + 33.

A square is a two-dimensional figure that has four sides and all four sides are equal.

The area of a square is side².

We have,

Two squares:

Smaller square:

Side = x + 4

Larger square:

Side = 5x - 7

Now,

Area of the shaded region.
= Area of the bigger square - Area of the smaller square

= (5x - 7)² - (x + 4)²

= 25x² - 70x + 49 - x² - 8x - 16

= 24x² - 78x + 33

Thus,

24x² - 78x + 33 is the area of the shaded region.

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the fractions with the same denominator will be 14/16 and 13/16.

What is a fraction?

It can also be written as a mixed number, which is a whole-number quotient with a proper-fraction residual, if the numerator is larger. This type of expression is used when the numerator is larger.

Divided by its denominator, any fraction can be converted to a decimal. The outcome may end at some point or one or more digits may repeat continuously.

The given fraction is given are 7/8 and 13/16.

Taking lcm of the denominator will be 16

So the fraction will be 7*2 = 14

So the fractions will be 14/16 and 13/16.

Hence the fractions with the same denominator will be 14/16 and 13/16.

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The estimate of the product, using rounding, is given as follows:

0.67 x 322 = 216.

The product in the context of this problem is defined as follows:

0.67 x 322.

Multiplying the two numbers, the result is given as follows:

0.67 x 322 = 215.74.

We want to round the product to the nearest integer, hence we add one to the integer part, as the decimal part has a first digit which is greater than 4.

Thus the rounded result is given as follows:

216.

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Answer:

(x + 7)/(x - 3)

Step-by-step explanation:

To simplify this expression, we first factor the numerator and denominator, and then cancel any common factors:

x² + 3x - 28 = (x + 7)(x - 4)

x² - 7x + 12 = (x - 3)(x - 4)

So the expression simplifies to:

(x + 7)(x - 4) / (x - 3)(x - 4)The (x - 4)

factor in both the numerator and denominator cancels out, leaving:

x + 7 / x - 3

Therefore, the simplified expression is (x + 7)/(x - 3)

Answer: We can use the Pythagorean theorem to find the length of the hypotenuse (c) of the triangle:

c = √(a^2 + b^2) = √(75.4^2 + 41.7^2) = √(5702.76 + 1738.69) = √(7441.45)

c ≈ 86.38 yd

Next, we can use the inverse cosine function (arccos) to find angle A:

A = arccos(a/c) = arccos(75.4/86.38)

A ≈ 30.49°

Finally, we can use the complementary angle formula to find angle B:

B = 90° - A

B ≈ 59.51°

So, the length of the hypotenuse is approximately 86.38 yards, angle A is approximately 30.49 degrees, and angle B is approximately 59.51 degrees.

Step-by-step explanation:

The company produce each month to maximize their profit be (50, 100000).

To ensure the best output and price levels are realized in order to maximize returns, business firms engage in the process of profit maximization. In order to achieve its profit objectives, the company modifies important variables including sale price, production costs, and output levels.

"Profit maximization" emphasizes the location of this critical point, or the optimal output at which your company is most profitable. An educational non-profit organization called Khan Academy states that "a corporation striving to maximize profit will produce the quantity where 'marginal cost' and 'marginal income' are equal to each other."

Let x be the number of ceiling fans

If the price per fan when you sell x fans exists (300 - 2x), then the amount received for selling x fans exists x(300 - 2x)

The cost for producing x fans is (20x + 100).

Profit = x(300 - 2x) - (20x + 100)

y = (1000 + 20x)(300 - 2x)

simplifying the equation, we get

y = 300000 - 2000x + 6000x - 40x²

y = -40x² + 4000x + 300000

simplifying the above equation, we get

y = -40(x² - 100x + 2500) + 100000

y = -40(x - 50)² + 100000

vertex: (50, 100000).

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Answer: 7

Step-by-step explanation:

We know that the base sides of the triangular prism are 6cm, 5cm, and

[tex]x[/tex] cm. We also know that the length of the prism is 20.

To calculate the lateral surface area of the triangular prism, we need to use the following equation:

[tex](a + b + c)[/tex] x [tex]length[/tex]

So we can input our values, to get this:

[tex](6 + 5 + x) 20 = 360[/tex]

Then we solve the equation by the following steps:

[tex]= > 6+5+x = \frac{360}{20} = 18\\= > 11 + x = 18\\= > x = 7[/tex]

Hope this helps, if you have any further inquiries about this, please reply back. :)

Answer & Step-by-step explanation:

To get the range of the function y = 2x + 1, we need to determine the set of all possible output values (y) that the function can produce for the given domain.

When x = -2, y = 2(-2) + 1 = -3.

When x = 4, y = 2(4) + 1 = 9.

When x = 6, y = 2(6) + 1 = 13.

So, the output values (y) for the given domain { -2, 4, 6 } are -3, 9, and 13.

The simplification of the given polynomial is az-bz+3b²-6ab+3a².

The factorization method uses basic factorization formula to reduce any algebraic or quadratic equation into its simpler form, where the equations are represented as the product of factors instead of expanding the brackets. The factors of any equation can be an integer, a variable, or an algebraic expression itself.

The given polynomial (a-b)·z+3(b-a)².

Here, (a-b)·z+3(b²-2ab+a²)

= z·(a-b)+3b²-6ab+3a²

= az-bz+3b²-6ab+3a²

Therefore, the simplification of the given polynomial is az-bz+3b²-6ab+3a².

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Answer:

12 lb of seed.

Step-by-step explanation:

We need to determine the amount of seed required for a 4800 sq ft lawn.

First, we need to find out how many 1200 sq ft portions the 4800 sq ft lawn is:

4800 sq ft / 1200 sq ft/portion = 4 portions

Next, we can use the seed manufacturer's recommendation of 3 lb of seed per 1200 sq ft:

3 lb/portion * 4 portions = 12 lb

Therefore, the architect will need 12 lb of seed.

Inferential statistics is discussed below.

Statistics is the discipline that concerns the collection, organization, analysis, interpretation, and presentation of data.

In applying statistics to a scientific, industrial, or social problem, it is conventional to begin with a statistical population or a statistical model to be studied.

Given is inferential statistics.

Inferential statistical analysis infers properties of a population, for example by testing hypotheses and deriving estimates. It is assumed that the observed data set is sampled from a larger population.

Inferential statistics can be contrasted with descriptive statistics. Descriptive statistics is solely concerned with properties of the observed data, and it does not rest on the assumption that the data come from a larger population.

Therefore, Inferential statistics is discussed above.

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The probability that an employee posted to country A at age 30 will survive to age 40 if she remains in that country is 2 x 10⁻⁶³

Probability is a mathematical concept that describes the likelihood of a specific event occurring within a set of possible outcomes

Let's start by defining some terms. The force of mortality, also known as the death rate, is the number of deaths per unit time per unit of population.

The probability of survival is the chance that an individual will live past a certain age. In our case, we want to know the probability of surviving from age 30 to age 40 while living in country A.

To calculate the probability of survival, we will use the formula:

[tex]P(x) = e^{-qx}[/tex]

Where P(x) is the probability of survival at age x and qx is the force of mortality at age x.

First, we will calculate the force of mortality for the first five years after arrival in country A using the equation given in the question:

90x+1 = (6 - 1)9x+1

For x = 30, we have:

90(30) + 1 = (6 - 1)9(30) + 1

2701 = 5 * 891 + 1

2701 = 4445 + 1

2700 = 4445

So, q30 = 4445/30 = 148.5

Next, we will use this value to calculate the probability of survival for the first five years in country A:

[tex]P30 = e^{-q3} = e^{-148.5} = 1.2 \times 10^{-64}[/tex]

Since the force of mortality for those who have lived in country A for at least five years is 50% greater than the US Life Tables, 2002, Females, we can calculate the force of mortality for the next 10 years as follows:

qx = 1.5 x qx from US Life Tables

Using the values from Table 3.11, we have:

q31 = 1.5 x 98,424 = 147,636

q32 = 1.5 x 98,362 = 147,543

q33 = 1.5 x 98,296 = 147,444

q34 = 1.5 x 98,225 = 147,338

q35 = 1.5 x 98,148 = 147,222

q40 = 1.5 x 97,500 = 146,250

Finally, we can use these values to calculate the probability of survival from age 31 to age 40:

[tex]P31 = e^{-q31} = e^{-147,636} = 1.3 \times 10^{-65}\\ \\P32 = e^{-q32} = e^{-147,543} = 1.4 \times 10^{-66}\\\\P33 = e^{-q33} = e^{-147,444} = 1.5 \times 10^{-67}\\\\P34 = e^{-q34} = e^{-147,338} = 1.6 \times 10^{-68}\\\\P35 = e^{-q35} = e^{-147,222} = 1.7 \times 10^{-69}\\\\P40 = e^{-q40} = e^{-146,250} = 2.0 \times 10^{-63)}\\\\[/tex]

Complete Question:

When posted overseas to country A at age x, the employees of a large company are subject to a force of mortality such that, at exact duration t years after arrival overseas (t = 0,1,2,3,4), 90x+1 = (6 - 1)9x+1 where qx+t is on the basis of US Life Tables, 2002, Females. For those who have lived in country A for at least five years the force of mortality at each age is 50% greater than that of US Life Tables, 2002, Females, at the same age. Some lx values for this table are shown in Table 3.11.

An extract from the United States Life Tables, 2002,

Females. Age,

x 30 31 32 33 34 35 40

1x 98,424 98,362 98,296 98,225 98,148 98,064  97,500

Calculate the probability that an employee posted to country A at age 30 will survive to age 40 if she remains in that country.

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Answer:

1/4 cup and 4 tablespoons

The value x= -2 makes the inequality  true.

Mathematical expressions with inequalities are those in which the two sides are not equal. Contrary to equations, we compare two values in inequality. Less than (or less than or equal to), greater than (or greater than or equal to), or not equal to signs are used in place of the equal sign.

Given:

12 > 2x + 4

Now, if we put x= 8 then

= 2x+ 8

= 2(8)+8

= 16+ 8

= 24 > 12

So, x=8 is not true

Now,  if we put x= 4 then

= 2x+ 8

= 2(4)+8

= 8+ 8

= 16 > 12

So, x=4 is not true

Now,  if we put x= 12 then

= 2x+ 8

= 2(12 )+8

= 24 + 8

= 32 > 12

So, x=12 is not true

and,  if we put x= -2 then

= 2x+ 8

= 2(-2)+8

= -4+ 8

= 4 < 12

So, x=-2 is true.

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