12 is 30% i have a test on this tomorrow step by step plz explain how you get this awnser!

12 is 30% of .

In this problem you are trying to find value of the number, which is 30% of 12. To make things simpler, we will name this unknown value as "t".

Since you are trying to find value of the number, which is 30% of 12, you will need to divide. The numbers you will be dividing with are 30 and 100. You got these numbers because 30% of 100%.

Because you are trying to find value of the number, which is 30% of 12, the value will multiply with our answer from 100/30 to get 12. In other words, t = 12 * 100/30.

Work out the equation and you will receive the
t = 40

It would be 15 m how i got the answer: (20x20) + b^2 = (25x25)400 + b^2 = 625625-400=225square that and get 15hope this : )