Question

you have a 15 foot ladder and need to reach exactly 9 feet up the wall. how far away from the wall should you place the ladder so that you can reach your desired location.

Answer 1

Explanation:

12

Answer 2

To get the answer we can use pythagorean theorem.
a^2+b^2=c^2, where c is our 15 foot ladder and a is our 9 (no matther a or b)
We can substitute our data into eq

`9^2+b^2=15^2 \\ 81+b^2=225` /subtract 81 both sides

`b^2=225-81 \\ b^2=144 \\ b=12` -
b=12 - its our answer