What number when added to 1 1/3 gives 2?

Sketch one cycle if the cosine function y=2cos2theta

What’s the answer ? use the picture to see the problem

The point a is at –2 and the point b is at 7. marissa would like to divide this line segment in a 4: 3 ratio, and she would like to use the formula x = (x2 – x1) + x1. what values should she substitute into the formula? a = a + b = x1 = x2 =