Convert the following decimal or whole number to a percent .89 1/2

What is the area of triangle abc if a = 8, b = 11, and c = 15?

Aline parallel to a triangle's side splits ab into lengths of x - 5 and x + 2. the other side, ac, is split into lengths of x and x + 12. what is the length of ac? a) 12 b) 24 c) 36 d)

Given abcd ac=38 and ae=3x+4 find the value of x