Question

Directions: Solve for x.
Please help

Answer 1

Explanation:

Since the whole right side of that triangle is equal to 28 and the lower portion is 21, then we know the upper portion is 7. Set up a proportion using those sides and the fact that the 2 triangles are similar:

`(7)/(21) =(x)/(18)` and cross multiply to get

21x = 126 and

x = 6