Which quadratic equations has the solution set [-20,9] A. (x+20)(x-9)=0
B. (x-20)(x+9)=0
C. (x-5)(x-4)=0
D. x^2-9x+20=0
E. x^2-11x+180=0
F. x^2+11x-180

hi!

i believe that john has 55 pieces of candy left.

!

circle area = pi * radius^2

if diameter = 10 then radius = 5

circle area = pi * 5^2

circle area = pi * 25

circle area = 78.5398163397 square units

step-by-step explanation:

v = 1/3 a^2h

step-by-step explanation:

if the height is 57.7cm and the height of the slant edge is 18.2cm, then the volume is 1/3 a^2h.

do have an equation or graph or

step-by-step explanation: