Convert this number to scientific notation. 186,000

Katlyn made 4 dresses with 7 yards of fabric. how many yards did she use on 1 dress?

Abcd is a parallelogram find the valuse of x

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.