Solve the following linear system by elimination

Answer:

brooooooooooo I got x=0

From least to greatest; Elliot, Jeanette, Lucy.

A percentage is a number or ratio that can be expressed as a fraction of 100. If we have to calculate percent of a number, divide the number by the whole and multiply by 100. Percentage means, a part per hundred. The word per cent means per 100. It is represented by the symbol “%”.

Elliot = 45/54 x 100%

Lucy = 88%

Jeanette = 38/44 x 100%

Elliot = 83%

Lucy = 88%

Jeanette = 86%

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The correct statements from the group of answer choices are:

The point satisfies both equation 1 and 2

The point is a solution to the system

What is linear equation ?

A linear equation is an algebraic equation with simply a constant and a first-order (linear) term of the form y=mx+b, where m is the slope and b is the y-intercept. The above is sometimes referred to as a "linear equation with two variables," where y and x are the variables.

To check whether the point (2, 11) is a solution to the system, we need to substitute these values into both equations and see if they hold true.

For equation 1:

-2 * 2 + 5 * 11 = -4 + 55 = 51

For equation 2:

-7 * 11 = -77

-61 - 8 * 2 = -61 - 16 = -77

Since both equations are true for the given point, the statement "The point satisfies both equation 1 and 2" is correct and "The point is a solution to the system" is also correct.

Therefore, the correct statements from the group of answer choices are:

The point satisfies both equation 1 and 2

The point is a solution to the system

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The missing term in the polynomial is 8x³y² - __ + 3xy² - 4y³ is  x²y².

A polynomial is an algebraic expression.

A polynomial of degree n in variable x can be written as,

a₀xⁿ + a₁xⁿ⁻¹ + a₂xⁿ⁻² +...+ aₙ.

Given, A polynomial 8x³y² - __ + 3xy² - 4y³.

Now, If we observe the terms we can conclude 'x' has decreasing powers and y has increasing powers, therefore, the term could be put in the blank to create a fully simplified polynomial written in standard form is x²y².

So, The polynomial is 8x³y² - x²y² + 3xy² - 4y³.

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Answer:

Below

Step-by-step explanation:

Out of 50 + 10 = 60 tries, 3 + 20 = 23 times were tails

  23/60 chance of tails

The estimate of the probability that Audi gets tails is given as follows:

p = 23/60.

A probability is calculated via the division of the number of desired outcomes by the number of total outcomes.

Hence the probability of each person getting tails when they throw a biased coin is given as follows:

The total number of throws is given as follows:

50 + 10 = 60.

The number of tails is given as follows:

3 + 20 = 23.

Hence the probability for Audi is given as follows:

p = 23/60.

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The two numbers which could be used for two in function are 5/2 and - 3.

The definition of a function is a "well-behaved" relation is one in which, given a starting point, we know the exact one ending spot to go to; given an x-value, we get only and precisely one corresponding y-value. Because functions pair information, they are all relations, but not all relations are functions. A subset of all of your relations are well-behaved family members, just as all mathematical relations are well-behaved functions.)

Given f(x)=x²+x

and f(2t)=30

When x = 2t, x²+x = 30

Substitute the value of x in function

(2t)²+2t = 30

4t² + 2t = 30

2(2t² + t) = 30

2t² + t = 15

2t² + 3t - 5t - 15 = 0

2t(t +3) - 5(t + 3)

(2t - 5)(t + 3)

t = 5/2

t = -3

Thus, The two numbers which could be used for two in function are 5/2 and - 3.

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Answer: C. 12000(1.05)^n < 20000

Step-by-step explanation:

When it says that the tuition is increasing at a rate of 5%, it means that you add 1

1+0.5= 1.05

Everything else is the same so you just add 1 to 0.5 and that is the answer.

Green Probability: 2/5

Yellow Probability: 2/5

Black Number of Beads: 4

If the chance to get a black bead is 1/5 the chance to get green or yellow has to be 4/5. Since both have the same amount of beads, the chance is 2/5 for each of them.

Now we know that 8 beads = 2/5 chance.

To find the number for 1/5 we just divide by 2.

8/2 = 4

Answer:

green Probability:2/5

yellow Probability:2/5

black Number of Beads:4

Step-by-step explanation                                                                                  best of luck

Based on the scatterplot, 50 beats per minute is the best prediction of the resting heart rate, in beats per minute, of a person who exercises an average of ​​​​​​​8 hours each week.

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The following statements is least accurate: When adding and subtracting, consider the number of buildings instead of Sf.

What does less accurate mean?

When adding or subtracting numbers, the number of digits in the result must be equal to the smallest number of digits after the decimal point of a term in the sum. How closely a measured value agrees with a reference or known value is referred to as accuracy. For example, if you get a weight measurement of 3.2 kg for a substance in a laboratory, but the actual or known weight is 10 kg, your measurement is not accurate.In this case, your measurement is nowhere near the known value.

Typically, bottom-up estimates fall into this category: the most accurate estimate is the final estimate because it is created by estimating individual costs for different parts of the project and then combining them into one estimate.

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The given inequality states that the value of x is greater than 3 and less than or equal to 4.

3 ≥ x > 4

Given inequality: 3 < x ≤ 4

Negating the given inequality:

1. Negate the inequality symbol:

3 ≥ x

2. Negate the comparison operator:

3 ≥ x > 4

The given inequality states that the value of x is greater than 3 and less than or equal to 4. When we negate this inequality, we get that the value of x is greater than or equal to 3 and greater than 4. This means that the fully simplified negation of 3 < x ≤ 4 is 3 ≥ x > 4.

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for the functions f and g, fog is given by

fog (x) = 2 ( 2x ^2 +4x ) +3  = 4x^2 +8x+3

The equation of f(x) is  f ( x ) = 2 x+ 3 and g ( x ) = 2x^ 2+ 4x

then fog is given by

fog (x) = 2 ( 2x ^2 +4x ) +3

         = 4x^2 +8x+3

The graph of g(x) is shifted 3 units to the left. This is a horizontal translation.

For horizontal translation, we follow the following rule >>>

Let parent function be f(x), then

• f(x+a) is the parent translated "a" units left

• f(x-a) is the parent translated "a" units right for function

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The system of equations are 7x + 5y = 200 and 5x + y = 112. The cost of each t shirt is $20 while the cost of each pants is $12.

An equation is an expression showing the relationship between two or more numbers and variables. An equation can either be linear, quadratic, cubic and so on depending on the degree.

Let x represent the cost of each t shirt and y represent the cost of each pants.

The shopper purchased 7 t shirts and 5 pairs of pants for $200, hence:

7x + 5y = 200    (1)

Also, he purchased 5 t-shirts and one pair of pants for $112, hence:

5x + y = 112     (2)

Solving the two equations simultaneously gives:

x = 20, y = 12

The system of equations are 7x + 5y = 200 and 5x + y = 112

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Answer:

1/4=0.25

Step-by-step explanation:

The probability that both students pick the same tire is (1/4) * (1/4) = 1/16

The probability of the first student picking a specific tire is 1 in 4, or 1/4. The probability of the second student also picking that same tire is also 1 in 4. To find the probability that both students pick the same tire, we need to multiply the probabilities of each event.

So, the probability that both students pick the same tire is (1/4) * (1/4) = 1/16. This means that the chance of both students picking the same tire is 0.0625 or 6.25%.

To summarize, there are four possible tires that could have gotten a flat, and two students are asked to identify the tire. If each student randomly chooses a tire, the probability that both students will pick the same tire is 1 in 16, or 0.0625. This means that the chance of both students picking the same tire is low, and the likelihood of them choosing different tires is much higher.

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The length of side MN from triangle MNP is 30.78

Please see the attached picture below as reference of triangle MNP.

From the case, we know that:

∠M = 90°

∠P = 72°

∠N = 18°

PM = 10

To solve this problem we need to find the length of side NP first using cos formula to angle P.

Cos ∠P = PM

                 NP

Cos 72° = 10 / NP

0.309 = 10 / NP

NP = 32.36

Next, we will use the same approac to angle N:

Cos ∠N = MN

                 NP

Cos 18° = MN / 32.36

MN = 0.951 x 32.36

MN = 30.78

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The complete table of values is

x  1   2   3  4

y  4  7  10  13

From the question, we have the following parameters that can be used in our computation:

y = 3x + 1

Set the variable x from 1 to 4

So, we have

y = 3 * 1 + 1 = 4

y = 3 * 2 + 1 = 7

y = 3 * 3 + 1 = 10

y = 3 * 4 + 1 = 13

When represented on a table of values, we have

x  1   2   3  4

y  4  7  10  13

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The exponential Function is  y(t) = 1500 [tex]e^{-0.0.325t[/tex].

Calculating the exponential growth or decay of a given collection of data is done using an exponential function, which is a mathematical function. Exponential functions, for instance, can be used to estimate population changes, loan interest rates, bacterial growth, radioactive decay, and disease spread.

An exponential function is defined by the formula f(x) = [tex]a^x[/tex], where the input variable x occurs as an exponent.

Given:

Forest covered the area of = 1500 Km²

Now, the area is decreased by 3.25%

So, the exponential Function to represent the situation

y(0)= 1500 km², r = -3.25% = - 0.0325

y(t) = A [tex]e^{rt[/tex], and A = y(0) = 1500

so, y(t) = 1500 [tex]e^{-0.0.325t[/tex]

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The tangent line on the curve x = 3t² + 5 , y = t³ - 7 have a slope as 1/2 at the point (8, -6).

The Tangent Line to a curve at a specific point is calculated  by the derivative of the curve at that point.

The Slope of the tangent line at a point (x₀, y₀) is given by the derivative of the curve at that point, denoted as f'(x₀).

The curve x = 3t² + 5 , y = t³ - 7 ,

we have to find the value of t such that the slope of the tangent line at that point is 1/2.

we first find the derivative of y with respect to x, which is given by:

⇒ dy/dt = 3t² and dx/dt = 6t

Using chain rule to find the derivative of y with respect to x:

⇒ dy/dx = dy/dt × dt/dx = (3t²)/6t = t/2

Next, we equate derivative to 1/2 and solve for t ;

⇒ t/2 = 1/2

⇒ t = 1

So, the point where the tangent line has slope 1/2 is

⇒ (x, y) = (3t² + 5, t³ - 7)

⇒ (8, -6).

Therefore , the point is (8,-6) .

The given question is incomplete , the complete question is

At what point on the curve x = 3t² + 5 , y = t³ - 7 , does the tangent line have slope as "1/2" ?

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The number of divisors of 1730 of the form 4n + 1 is 20.

An integer is a whole number, meaning it can be positive, negative, or zero, but it cannot be a fraction or a decimal. Integers are a subset of real numbers, which also include fractional and decimal numbers.

Integers are commonly used in mathematics and computer science for counting and for performing arithmetic operations such as addition, subtraction, multiplication, and division. They are also used to represent the magnitude of a quantity, such as the number of items in a set or the time elapsed in seconds.

In computer programming, integers are often stored as binary numbers, which are sequences of bits that represent positive or negative whole numbers. Different computer architectures have different numbers of bits for representing integers, with common sizes being 8, 16, 32, and 64 bits.

The number (10)10. (11)11. (13)13 is equal to 11 × 13 × 10 = 1730 in decimal.

A divisor of a number can be represented as (4n + 1) where n is a non-negative integer.

To find the number of divisors of 1730 of the form 4n + 1, we need to find the number of factors of 1730 that can be expressed as 4n + 1.

First, we find the prime factorization of 1730:

1730 = 2 × 3 × 5 × 29

Since 1730 is an odd number, one of its divisors must also be an odd number.

The only possible values for n are 0, 1, 2, ..., (number of odd divisors - 1).

In this case, the number of odd divisors of 1730 can be calculated as:

(number of ways to choose 0 odd factors) × (number of ways to choose 1 odd factor) × (number of ways to choose 2 odd factors) × ... × (number of ways to choose 4 odd factors)

= 1 × 4 × 5 × 1 = 20

Thus, the number of divisors of 1730 of the form 4n + 1 is 20.

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The intersection of this sphere with the -plane is (y+6)²+(z-4)²=21

The equation of a sphere centered at (h,k,l) and radius r is given by:

(x−h)²+(y−k)²+(z−l)²=r²

where x,y, and z represent the coordinates of the points on the surface of the surface.

so if the center is (-3,2,5) and radius r=4 then we can plug the values in the above formula:

consider the points  h=-3 k=2 l=5 and r=4.

(x−(-3))²+(y−2)²+(z−5)²=4²

(x+3)²+(y−2)²+(z−5)²=16.

If the sphere intersects the yz-plane then x=0

The resulting equation is an equation of a circle with a radius r=√21

and at the center with (6,-4) on the yz-plane

with yx-plane:

⇒(x−2)²+(y+6)²+(z−4)²=25

⇒ (0−2)²+(y+6)²+(z−4)²=25

⇒4+(y+6)²+(z−4)²=25

⇒(y+6)²+(z−4)²=25-4

⇒(y+6)²+(z−4)²=21

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Answer:

Each child gets $36666.67, each grandchild gets $18333.33

Step-by-step explanation:

220000/6= 36666.67,

36666.67/2= 18333.33

Option A is the correct Answer. The total cost of his loan if he paid it off 4 years early is 312,423.90

We have given:

The principal amount which is 30,000

Time which is 30 year

The rate which is 5.5%

And since, we have to find 4 years early so, the time would be: 20-4=16 years.

And since, we have to find for 12 months

Hence, n=12

We have the formula to calculate compound interest:

[tex]A=P(1+\frac{r}{n})^n^t[/tex]

Where

A=compound interest

P= Orginal amount deposited.

r= rate

n=times its compounds per year monthly

t= years.

P=155000, r=5.5, t=16

On substituting the values we get:

[tex]A=155000(1+\frac{0.055}{12})^1^2^*^1^6\\\\A=155000(1+\frac{0.055}{12})^1^9^6\\\\A=155000(14884.0754)\\\\A=312,423. 90[/tex]

Therefore, the compound interest is 312,423.90

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Answer:

Step-by-step explanation:

Ln means log to the base e and 3x+1 is an exponent

So the answer is:

4 = e^(3x+1).

By applying normal approximation to the binomial concept, it can be concluded that the indicated probability is 0.62134

Normal approximation to the binomial is a method of approximating the probabilities associated with the binomial distribution using the normal distribution.

μ = n.p

σ = √np(1-p)

where μ is the mean, n is the number of trials, p is the success probability and σ is the standard deviation.

Now we have:

x = 6

n = 18

p = 0.3

Thus we can calculate the mean:

μ = np

  = 18 * 0.3

  = 5.4

Now we calculate the standard deviation

σ = √μ (1-p)

  = √ 5.4 (1 - 0.3)

  = √ 5.4 * 0.7

  = √ 3.78

  = 1.944

Then we can find the z-score using the mean and standard deviation found in the previous step:

z-score = (x – μ) / σ

            = (6 - 5.4) / 1.944

            = 0.6 / 1.944

            = 0.309

And finally, we can obtain from the z table that P(6) = P(x<0.309) = 0.62134

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Answer: The sample space of rolling an eight-sided die would be (1, 2, 3, 4, 5, 6, 7, 8)

Step-by-step explanation: thank you

The x value when the y value equals 12 is calculated to be 31

From the problem the equation is deduced to be : x = 2y + 7

When y = 12,

we can substitute this value into the equation to find the corresponding x value:

x = 2(12) + 7

x = 24 + 7

x = 31

Therefore, the x value when the y value equals 12 is 31.

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The interpretation that the likelihood that the first question will be true is (a) Likely.

Probability is a number that expresses the likelihood or chance that a specific event will take place. Both proportions ranging from 0 to 1 and percentages ranging from 0% to 100% can be used to describe probabilities.

To interpret the likelihood that the first question will be true.

From the question, we have the following parameters that can be used in our computation:

Probability value

The value of the probability and the notation are given as

P(true) = 0.8

As a general rule of probability, we have

Range of probability value = 0 to 1 (inclusive)

Unlikely = less than 0.5

Equally likely and unlikely = 0.5

Likely = greater than 0.5

Using the above as a guide, we have the following:

The value of P(true) = 0.8 is greater than 0.5

This that the probability is likely

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After three days Thurber will have studied the same total amount of time for both math and science and the time is 165 minutes for both.

Given data :

Today,  he studies 15 minutes math and 75 minutes science and from now on, 50 minutes math and 30 minutes science. So if he studies for 1 day total time for math and  science will be:

Math = 15 + 50 = 65

Science = 75 + 30 = 105

2nd day:  

Math = 65 + 50 = 115

Science = 105 + 30 = 135

3rd day:  

Math = 115 + 50 = 165

Science = 135 + 30 = 165

So, after three days Thurber will have studied the same total amount of time for both math and science and the time is 165 minutes for both.

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Fill the 3-gallon jug all the way.

Pour those 3 gallons of water into the 5-gallon jug.

Fill the 3-gallon jug all the way again, and pour as much as it takes to fill the 5-gallon jug (which is 2 gallons).

Now you have 5 gallons in the 5-gallon jug and 1 gallon in the 3-gallon jug.

Empty the 5-gallon jug.

Pour the 1 gallon in the 3-gallon jug into the 5-gallon jug.

Now fill the 3-gallon jug all the way, and pour all 3 gallons into the 5-gallon jug, which, added to the 1 gallon already in there, and leaves you with exactly 4 gallons.

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Fill the 3-gallon jug all the way.

Pour those 3 gallons of water into the 5-gallon jug.

Fill the 3-gallon jug all the way again, and pour as much as it takes to fill the 5-gallon jug (which is 2 gallons).

Now you have 5 gallons in the 5-gallon jug and 1 gallon in the 3-gallon jug.

Empty the 5-gallon jug.

Pour the 1 gallon in the 3-gallon jug into the 5-gallon jug.

Now fill the 3-gallon jug all the way, and pour all 3 gallons into the 5-gallon jug, which, added to the 1-gallon already in there, leaves you with exactly 4 gallons.

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Answer:

  {-√6, -1, 1, √6}

Step-by-step explanation:

You want the roots of the quartic 3x^4-21x^2+18.

We can find the roots by factoring to linear factors:

  = 3(x^4 -7x^2 +6)

  = 3(x^2 -6)(x^2 -1) . . . . . . . 6 = (-1)(-6) are factors with a sum of -7

  = 3(x -√6)(x +√6)(x -1)(x +1) . . . . . a^2 -b^2 = (a -b)(a +b)

The roots of the quartic are ±√6 and ±1.