Write an equation that represents: 30% of 140 is x. Just set it up, do not solve for x.

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

Aconstruction worker has rope 9 m long he needs to cut it in pieces that are each 3 /5 m long how many such pieces can he cut without having any rope leftover?

What multiplys to be 1 but adds up to be 4