Proving the Converse of the Parallelogram Side Theorem PLEASE HELP
Proving a Quadrilateral Is a Parallelogram

Which expression is equivalent to7_/x^2 ÷ 5_/y^3? assume y# 0

You are standing next to a really big circular lake. you want to measure the diameter of the lake, but you don't want to have to swim across with a measuring tape! you decide to walk around the perimeter of the lake and measure its circumference, and find that it's 400\pi\text{ m}400? m. what is the diameter dd of the lake?

Car a and car b were in a race .the driver of car b claimed that his car was twice as fast as car a