The sum of the angle measures of any triangle is 180 degrees. suppose that one angle in a triangle has a degree measure of −4x3 and another has a degree measure of +5x4 . write an expression for the degree measure of the third angle in the triangle.

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? *