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NeTakaya
3 years ago
6

A=5b+8 Rearrange to make subject

Mathematics
1 answer:
Mumz [18]3 years ago
3 0

AnswThe method is to separate the variable from everything else. That means getting the variable on one side of the equals sign and everything else on the other side. A=5B+8.

Subtract 8 from each side: A-8=5B.

Now divide each side by 5: (A-8)/5=B.

So B=(A-8)/5.

er:

Step-by-step explanation:

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If a class have 32 students and 12 is girls, what is the percentage of girls
Vlad1618 [11]
Hey there! 

Here are the steps involved in answering this question:

1. Write 12 out of 32 as a fraction which is \frac{12}{32}

2. Turn the fraction into a decimal. To do this, divide the numerator by the denominator. The numerator is the top part of the fraction while the denominator is the bottom part of the fraction.

   \frac{12}{32} = 0.375

3.<span> You get 0.375. Now, turn this into a percent. Move the decimal, 2 places to the right or just multiply the decimal by 100.</span>

0.375 = 37.5%

The final answer is 37.5%.

<span>(If you feel that my answer has helped you, please consider rating it and giving it a thank you! Also, feel free to make the best answer, the brainliest answer!)
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Thank you! :D
6 0
4 years ago
Read 2 more answers
Solve the equation <img src="https://tex.z-dn.net/?f=%5Cfrac%7Bx%7D%7B3%7D%20-%5Cfrac%7B3-2x%7D%7B6%7D%3D%5Cfrac%7B5%7D%7B2%7D%2
mestny [16]

Answer:

x = - \frac{3}{11}

Step-by-step explanation:

Given

\frac{x}{3} - \frac{3-2x}{6} = \frac{5}{2} x

Multiply through by 6 to clear the fractions

2x - (3 - 2x) = 15x ← distribute and simplify left side

2x - 3 + 2x = 15x

4x - 3 = 15x ( subtract 4x from both sides )

- 3 = 11x ( divide both sides by 11 )

- \frac{3}{11} = x

7 0
3 years ago
Read 2 more answers
\begin{aligned} &amp; 2x+7y = 3 \\\\ &amp; x=-4y \end{aligned}
zheka24 [161]

Answer:

x = 12 , y = -3

Step-by-step explanation:

Solve the following system:

{2 x + 7 y = 3 | (equation 1)

x = -4 y | (equation 2)

Express the system in standard form:

{2 x + 7 y = 3 | (equation 1)

x + 4 y = 0 | (equation 2)

Subtract 1/2 × (equation 1) from equation 2:

{2 x + 7 y = 3 | (equation 1)

0 x+y/2 = -3/2 | (equation 2)

Multiply equation 2 by 2:

{2 x + 7 y = 3 | (equation 1)

0 x+y = -3 | (equation 2)

Subtract 7 × (equation 2) from equation 1:

{2 x+0 y = 24 | (equation 1)

0 x+y = -3 | (equation 2)

Divide equation 1 by 2:

{x+0 y = 12 | (equation 1)

0 x+y = -3 | (equation 2)

Collect results:

Answer: {x = 12 , y = -3

4 0
3 years ago
Find the range or Y value for each of the given function domain or x values with the function. f(x)=-5x. f(1)=, f(2)=, f(3)=, f(
Katena32 [7]
You basically plug in the x values with the given function so the y values are -5,-10,-15,-20

8 0
2 years ago
A window is in the form of a rectangle capped by a semicircle. The width of the rectangular portion is equal to the diameter of
xxTIMURxx [149]

Answer:

The answer is below

Step-by-step explanation:

Let x be the diameter of the semicircle. radius = x/2

The window is a combination of a rectangle and semicircle.

Width of window = diameter = x, let length of the window = y.

Perimeter of semicircle = πr = πx/2

Perimeter of window = x + y + y + πx/2

20 = x + 2y + πx/2

2y + x + πx/2 = 20

2y = 20 - x(1 - π/2)

y = 10 - x(1 - π/2)/2

Area of semicircle = (1/2)πr² = (1/2)π(x/2)²

Area of window = xy + (1/2)π(x/2)²

A = x(10 - x(1 - π/2)/2) + πx²/8

A = 10x - x² - πx²/4 + πx²/8

A = 10x - x² - πx²/8

The maximum area is at dA / dx = 0

dA / dx = 10 - 2x - 2πx/8

0 = 10 - 2x - πx / 4

2x + πx / 4 = 10

2.785x = 10

x = 3.59 feet

Maximum area = 10x - x² - πx²/8 = 10(3.59) - 3.59² - π(3.59²) / 8

Maximum area = 17.95 feet²

3 0
3 years ago
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