A^2 = 13^2+11^2-2(13)(11)cos(A)

please show your work and explain im confused

Aresearch company wants to test the claim that a new multivitamin to improve short term memory. state the objective of the experiment, suggest a population, determine the experimental and control groups, and describe a sample procedure.

Terri makes a quilt using three sizes of fabric squares the side lenght of each fabric square is the square root of the area

What is the inverse of the function f(x) = 2x + 1?