Name the subset of the real number to which each number belongs
1. square root of 11
2. -7

If there is no real number solution to the quadratic equation x^2+2x+c=0 what is a possible value of c? 1 -2 0 3

Express the following as a function of a single angle. cos(60) cos(-20) - sin(60) sin(-20)

What is the scale factor of two similar pyramids with volumes of 64 cubic feet and 8 cubic feet