Three-fifths of the sum of 9 and f

What are the solutions of the system? solve by graphing. y = -x^2 - 3x + 2 y = -2x + 2

Which radical expression is a rational number? a. √ 360 b. √ 644 c. √ 225 d. √ 122

One of the complementary angles is 4 degrees mor than the other. find the angles (recall that complementary angles are angles whose sum is 90 degrees.) which of the following can not be used to solve the problem if x represents one of the angles? a. 2x-4=90 b. 2x+4=90 c. x+4=90