Use the quadratic formula to solve the equation-x^2+7x-9=0

Suppose a triangle has two sides of length 32 and 35, and that the angle between these two sides is 120°. which equation should you solve to find the length of the third side of the triangle?

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

What is the expression in factored form? 225x^2 - 144 a. 9(5x+4)^2 b. 9(5x-4)^2 c. 9(4x+5)(4x-5) d. 9(5x+4)(5x-4)