Question

Find out the unknown length. Please i really need help on this one really bad...

Answer 1

6

Explanation:

using similar triangles

x/(x+8) =15/35

x/(x+8) =3/7

cross multiply the two sides which will give u

3(x+8) =x*7

3x +24 =7x

24=7x-3x

24=4x

using 4 to divide both sides

24/4=4x/4

6=x

x=6