In △ABC, AB=8, BC=10, and AC=12. Let M, N, and K be the midpoints of the sides of △ABC. Find the length of each side of △MNK.

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36

Which of the following is the best first step in solving the equation below? 4+2㏒³x=17