The triangles are similar. what is the value of x? enter your answer down below. x = (click on the screenshot down below for more information about this question.)

x=23

Step-by-step explanation:

The triangles have to be in the same ratio.  Put big triangle side  over little triangle side.

15                  39

=

5                    x-10

Using cross products

15 * (x-10) = 5 * 39

Divide by 15 on each side

15/15 (x-10) = 5*39/15

x-10 = 13

Add 10 to each side

x-10+10 = 13+10

x=23

answer: -8.2562234e+13

hey! so 1 (25) out of 4 (100) is 25 so your answer is 25%. it's like quarters!