Find the value of each pair of expressions
-12+(-4+9)

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

Aplane intersects a pris paralel to the base of the prism. the cross section is a polygon wth eight sides. how many sides does the base of the prism have? a. 10 b. 8 c. 7 d. 9

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose