Which of the following is the complete solution to the equation? (x-10)(x+8)=0

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *

An isosceles trapezoid was broken into a rectangle and two triangles. what are the base and height of one of the triangles?

Angle m aoc=108° m aob=3x+4° m boc=8x-28° find m aob