What is the perimeter of the trapezoid?
units

If a || b and b | y, then ? a) x || y. b) x | a. c) a | y. d) a || y.

Lucy is a dress maker. she sews \dfrac47 7 4 of a dress in \dfrac34 4 3 hour. lucy sews at a constant rate. at this rate, how many dresses does lucy sew in one hour? include fractions of dresses if applicable

The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.