Which expression is equivalent to (x^-4y/x^-9y5)^-2? assume x=0 y=0

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

You are shooting hoops after school and make 152 out of a total of 200. what percent of shots did you make? what percent did you miss? show proportion(s).

In the diagram, gef and hef are congruent. what is the value of x