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agasfer [191]
3 years ago
8

Solve for the indicated variable in each mathematical formula.

Mathematics
2 answers:
Rashid [163]3 years ago
8 0

<em>So to solve for a variable, your goal is to isolate that variable onto one side.</em>

<h3>1.</h3>

For this, divide both sides by 2π and<u> your answer will be \frac{C}{2\pi }=r</u>

<h3>2.</h3>

Firstly, divide both sides by h: \frac{A}{h}=\frac{1}{2}b

Next, multiply both sides by 2 and<u> your answer will be \frac{2A}{h}=b</u>

<h3>3.</h3>

Firstly, subtract both sides by b: y-b=mx

Next, divide both sides by m and <u>your answer will be \frac{y-b}{m}=x</u>

yanalaym [24]3 years ago
5 0

1. C=2πr

We need to move r by itself on a side of the equation.

Divide both sides of the equation by 2π. This will cancel out the side with the r.

r=C/2π

2. A=1/2*b*h

Divide both sides by 1/2*h, isolating b

b=A/\frac{1}{2}h

3.y=mx+b

Now we have to do reverse PEMDAS, we have to add/subtract before we can multiply or divide to simplify.

Subtract both sides by b

y-b=mx

Now divide both sides by m

x=\frac{y-b}{m}

Remember we have to divide both terms y and -b by 2, so it goes on the bottom for both.

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