Using the given information, solve for alpha.

In a circle, a 45° sector has an area of 32π cm2. what is the radius of this circle? 32 cm 12 cm 16 cm 8 cm

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0

Rose bought a new hat when she was on vacation. the following formula describes the percent sales tax rose paid b=t-c/c