Susie saved up her money and bought a model train. Rack of the 8 cars on the train were the same length. When Susie put all the trains together the train was 3 feet long. How long was each car?

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Explanation:

Let's consider the expression (x-y)^2. It expands out to x^2-2xy+y^2. The terms are:

Each of those terms either has a single variable with an exponent of 2, or has the exponents add to 2. Think of 2xy as 2x^1y^1.

In short, this means that the degree of each monomial term is 2.

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Now consider (x-y)^3. It expands out into x^3-3x^2y+3xy^2+y^3.

We have terms that either have a single variable and the exponent is 3, or the exponents add to 3. The degree of each term is 3.

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This pattern continues.

In general, for (x-y)^n, where n is any positive whole number, the degree of each term in the expansion is n. If you picked any term, added the exponents, then the exponents will add to n.

Answer:

y = x + 60

Step-by-step explanation:

the equation of a line in slope- intercept form is

y = mx + c ( m is the slope and c the y- intercept )

calculate m using the slope formula

m = \(\frac{y_{2}-y_{1} }{x_{2}-x_{1} }\)

with (x₁, y₁ ) = (20, 80) and (x₂, y₂ ) = (40, 100) ← 2 points on the line

m = \(\frac{100-80}{40-20}\) = \(\frac{20}{20}\) = 1

the line crosses the y- axis at (0, 60 ) ⇒ c = 60

y = x + 60 ← equation of line

Answer:

yes it is correct

Step-by-step explanation:

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The fish tank has a total volume of 288 inch³. As a result, Jessica's new fish tank has a capacity of 288 inch³ for water.

The volume of a rectangular prism can be calculated using the formula:

V = l x b x h..........(i)

where,

V ⇒ Volume

l  ⇒ length

b ⇒ width

h ⇒ height

From the question, we are given the values,

l = 8 inches

b = 4 inches

h = 9 inches

Putting these values in equation (i), we get,

V = 8 x 4 x 9

⇒ V = 288 in³

Therefore, the fish tank has a total volume of 288 inch³. As a result, Jessica's new fish tank has a capacity of 288 inch³ for water.

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Answer:

9

Step-by-step explanation:

The correct answer is System 1: Infinitely many solutionsSystem 2: One solutionSystem 3: No solution

Let's analyze each system of linear equations and determine the number of solutions they have.

y = x + 6 and 3x - 3y = -18

In this system, the first equation is a linear equation in slope-intercept form, and the second equation is a linear equation in standard form. The two equations represent the same line. Since they are the same line, they intersect at infinitely many points. Therefore, this system has infinitely many solutions.

y = -4x + 11 and -6x + y = 11

Both equations in this system are in slope-intercept form. The slopes of the two lines are different (-4 and -6), indicating that the lines are not parallel. Since the lines are not parallel and have different slopes, they intersect at a single point. Therefore, this system has one solution.

y = -2x + 5 and 2x + y = -7

Both equations in this system are in slope-intercept form. The slopes of the two lines are equal (-2 and 2), but their y-intercepts are different. When the slopes are equal and the y-intercepts are different, the lines are parallel and do not intersect. Therefore, this system has no solution.

Matching the systems with the correct number of solutions:

System 1: Infinitely many solutions

System 2: One solution

System 3: No solution

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Answer:

S=L+W

8+8+8+8

16+16

=56

The maximum amount you can finance is $896.

We are given that;

The monthly gross income = $3,200

Now,

28% of your gross monthly income on your mortgage, including taxes and insurance

The percentage = 28%

3200* 28/100

=32*28

=896

Therefore, by percentage the answer will be $896.

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Answer:

if I'm supposed to find the number it is 768

Step-by-step explanation:

double 96 which equals 192 then multiply that times 4 which is 768

The 50% of 25% of the number 96 will be equal to 12.

The percentage is defined as representing any number with respect to 100. It is denoted by the sign %. The percentage stands for "out of 100." Imagine any measurement or object being divided into 100 equal bits.

Given that the number is 96 and the value of 50% of 25% of 96 will be calculated  as,

P = 50% x 25% x 96

P = 0.5 x 0.25 x 96

P = 12

Therefore, 50% of 25% of the number 96 will be equal to 12.

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Answer: 17

Step-by-step explanation:

Answer:

12.5

Step-by-step explanation:

To evaluate an algebraic expression, you have to substitute a number for each variable ( y for 4.5 as in the question ) and perform the arithmetic operations ( then add 4.5 + 8 )

4.5 + 8 = 12.5

HOPE THIS HELPED

The volume of such a mound of gravel is,

⇒ V = 179.52 ft³

Multiplication means to add number to itself a particular number of times. Multiply will be viewed as a process of repeated addition.

Given that;

The formula for the radius is,

⇒ r = ∛3 V / 2π

Since, We have;

Radius = 4.41 feet

Hence, The volume of such a mound of gravel is,

⇒ r = ∛3 V / 2π

⇒ 4.41 = ∛3 V / 2 x 3.14

⇒ 4.41³ = 3V/6.28

⇒ 85.77 × 6.28 = 3V

⇒ 538.57 / 3 = V

⇒ V = 179.52 ft³

Thus, The volume of such a mound of gravel is,

⇒ V = 179.52 ft³

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x=4

Step-by-step explanation:

2log(x)+log(5)=log(80)

log(x^2)+log(5)=log(80)

log(5x^2)=log(80)

5x^2 =80

x^2 =80/5

x^2=16 , taking square root both sides

x=√16

=4

Answer:

4.5 miles

Step-by-step explanation:

28x = 126

divide each side by 28

x = 126/28

x = 4.5 miles

Answer:

it's 396

Step-by-step explanation:

I took the k-12 quiz math Surface Area quiz

Answer:What answer do you want, how much money is left? Because I'm confused, that is what I will answer. 4 times 5 is 20, and 25-20 is 5$ left.

Answer: There are 5 dollars left, and 20 dollars deducted.

Step-by-step explanation:

4 x 5 = 20

20 - 25 = 5

You must multiply 5 by the number of days there are. Then subtract that number from the total.

The rate of change of the simple index over one day is approximately 12.78%.

To calculate the rate of change of the simple index over one day, we need to determine the percent change in the total value of the index between Monday's opening and Tuesday's opening.

On Monday, Stock A has 5000 shares at $2.75 per share, so its total value is:

Total value of Stock A on Monday = 5000 * $2.75 = $13,750

Similarly, on Monday, Stock B has 3000 shares at $4.30 per share, so its total value is:

Total value of Stock B on Monday = 3000 * $4.30 = $12,900

The total value of the index on Monday is the sum of the values of Stock A and Stock B:

Total value of the index on Monday = $13,750 + $12,900 = $26,650

On Tuesday, Stock A opens at $3.10 per share, and Stock B opens at $4.85 per share. Both stocks still have the same number of shares as on Monday.

The total value of Stock A on Tuesday is:

Total value of Stock A on Tuesday = 5000 * $3.10 = $15,500

The total value of Stock B on Tuesday is:

Total value of Stock B on Tuesday = 3000 * $4.85 = $14,550

The total value of the index on Tuesday is the sum of the values of Stock A and Stock B:

Total value of the index on Tuesday = $15,500 + $14,550 = $30,050

To calculate the percent change in the index, we use the formula:

Percent Change = ((New Value - Old Value) / Old Value) * 100

Percent Change = (($30,050 - $26,650) / $26,650) * 100 ≈ 12.78%

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Answer:

A . x=13 is the solution of this question.

Answer:

x=3

Step-by-step explanation:

subtract 12 from both sides of the equation

x+12=25

x+12-12=25-12

then subtract the numbers

x=13

Answer:

c) -152/377

Step-by-step explanation:

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Answer:

8.5

Step-by-step explanation:

Answer:

i know its hard on computer

Step-by-step explanation:

Answer:

Let's assume that the smaller number is x and the larger number is y.

From the problem, we can write:

y = 2x + 2 (since the quotient and remainder when y is divided by x are both equal to 2)

5x = 2(y - 2) (since the quotient and remainder when 5x is divided by y are both equal to 2)

Substituting the first equation into the second equation, we get:

5x = 2((2x + 2) - 2)

5x = 4x + 4

x = 4

Substituting x = 4 into the first equation, we get:

y = 2x + 2 = 10

Therefore, the two numbers are 4 and 10

Answer:

3 and 4

Step-by-step explanation:

Answer:

1st and last one just did the question and it was right

Answer:

11.25 seconds

Step-by-step explanation:

first, we need to figure how how far william can run per second

we can find this by 40 ÷ 4.5

= 8.889 per second

so we know that 8.889 • s (seconds) = 100

8.889s = 100                 divide both sides by 8.889

s = 11.25 seconds

Answer:

William will take 11.25 seconds to run 100 yards

Step-by-step explanation:

Constant Rate

William runs 40 yards in 4.5 seconds. The rate of change of the distance is

\(\frac{40}{4.5}\)

To run 100 yards, we divide by the rate obtained above:

\(\displaytstyle \frac{100}{\frac{40}{4.5}} =100*\frac{4.5}{40} =11.25\)

William will take 11.25 seconds to run 100 yards

The property you are referring to is called the associative property of multiplication. According to this property, when multiplying three numbers, the grouping of the numbers does not affect the result. In other words, you can change the grouping of the factors without changing the product.

In the equation you provided: 3x(5x7) = (3x5)7

The associative property allows us to group the factors in different ways without changing the result. So, whether we multiply 5 and 7 first, or multiply 3 and 5 first, the final product will be the same.

Answer:

The equation g² + 42 = 0 has two real solutions.

To solve this equation, we can start by subtracting 42 from both sides to get g² = -42. Then, we can take the square root of both sides to get |g| = √42. Since the square root of a number is positive, this means that g = √42 or g = -√42. These are the two solutions to the equation.

Answer:

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