Question

So like how do I do this?

Answer 1

x= 15

No

H²= O²+A²

x²= 9²+12²

x²= 81+144

x²= 225

x= √225

x= 15

Answer 2

Explanation:

The legs of the triangle have lengths 9 and 12. The Pythagorean Theorem says
`(\text{hypotenuse})^2=(\text{leg})^2+(\text{leg})^2`.

`x^2=9^2+12^2=81+144=225\\x=√(225)=15`

Yes, these values make a Pythagorean Triple (3 integers that fit the Pythagorean Theorem)

There are infinitely many of these triples: 3,4,5 5,12,13 are examples. The triple in this problem is 3 times the 3,4,5 triple.