Will mark brainlest * and fast : )

Given the two similar triangles, how do i find the missing length? if a=4, b=5, and b'=7.5 find a'

Select the correct answer from each drop-down menu. a system of equations and its solution are given below. system a complete the sentences to explain what steps were followed to obtain the system of equations below. system b to get system b, the equation in system a was replaced by the sum of that equation and times the equation. the solution to system b the same as the solution to system a.]

What is the area of a triangle with vertices at (-3 3) (-3,2) and (1,2)?