Question

What is the value of x?

12 units
15 units
20 units
25 units

Need work shown please

Answer 1

15=x

Explanation:

a^2 + b^2=c^2

=9^2 +12^2 =x^2

=81 +144=x^2

=/225 =/x^2

=15=x

Answer 2

x = 12

Explanation:

Use the right triangle altitude theorem.

16/x = x/9

x^2 = 16 * 9

x^2 = 144

x = 12