Solve system of equations using substitution 3y=-1/2x+2 y=-x+9

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

Carly stated, “all pairs of rectangles are dilations.” which pair of rectangles would prove that carly’s statement is incorrect?

On a final exam, each multiple-choice question is worth 4 points and each word problem is worth 8 points. lorenzo needs at least 50 points on the final to earn a "b" in the class. which inequality represents x, the number of correct multiple-choice questions, and y, the number of correct word problems, he needs to earn a "b"? 4x + 8y < 50 4x + 8y s 50 4x + 8y > 50 4x + 8y 250