saseflower

.02 = x/(.5)2

Multiply .5 and 2 together

.02 = x/(1)

Multiply each side by 1

.02 = x

When you say a number is "of" another number, you are multiplying

 Ex:

What is 9% of 20?

You multiply .09 and 20 together to find the answer :)

When you post an answer, you'll see insert at the top

Click on insert, then special character

The division sign is the second to last character in the second row

→ ÷ ←

x/100 = 40/400

Cross multiply

400x = 4000

Divide by 400 on both sides

x = 100

x = 10%

Plug the numbers into the formula above ^^

m = (4 - 2)/(2 - 3)

Solve

2/-1

The commutative property allows you to swap numbers around and still get the same answer.

Ex:

2 + 1 = 1 + 2

My teacher is having us memorize 1-25 squared, and basically you just have to study!

To be absolutely honest, a lot of people don't use certain types of math when they are older, like algebra. But we do need math to get to good colleges, it's just the way things are. When you say "why do we need math" that also means why do we need to know 1 + 1? You use math in every day life.

3x - 4 = 107

Add 4 on both sides

3x = 110

Divide by 3 on both sides

x = 36.6666666667 or 36.7 or 37

uhhhh..... interesting.....