True or false for all real numbers a and b, 2a • b = a^2 + b^2

Parallelogram ABCD has vertex coordinates A (-4,4), b (-1,4), c (-2,2), and d (-5,2). It is reflected across the y-axis. What are the coordinates of C?

Ted pays $35 per hour for scuba class. Identify the constant of proportionality that relates his scuba class charges (y) to the number of hours (x) he goes to class. A) x B) y C) $35 D) x+y

together, miguel and rico collected 175 books. they delivered 1/5 of the books to a preschool and 2/5 of the books to a camp. the rest were divided equally between 2 libraries. how many books did each library get?

What is 9 tens = how many ones

Why is 3/4 greater than 3/8

The regular price of a calculator is $15.40. it goes on sale for 30% off the regular price. what is the amount of savings on the calculator

If two angles are complementary and one angle is 52°, what is the measure of the other angle? 38° 52° 128° 90

How to find x and y for 4 (x+1) = 4x+2+2

What is a solution I forgot the inequality M > 13/6

Find a polar equation of the form r=f (θ) for the curve represented by the cartesian equation x=-y2.