What was the purpose of the pendleton act?

What is the sum of these mixed numbers 2 1/8 + 4 3/8

List the sides of δrst in ascending order (shortest to longest) if: m∠r =x+28°, m∠s = 2x+16°, and m∠t = x+12

For what values of the variable x is the expression square root of 7x+14+ square root of 7-x a real number?