Explain how you can rename 5,400 as hundreds

Divide the following fractions 3/4 ÷ 2/3 1/2 8/9 9/8 2

What is the first step of an indirect proof of a number that is divisible by two

Me, prove a quadrilateral with vertices g(1,-1), h(5,1), i(4,3) and j(0,1) is a rectangle using the parallelogram method and a rectangle method.