Find the value of each variable and the measure of each labeled angle.

Factor the monomial completely 42a3b3

What is the value of x in the equation 1/5x - 2/3y = 30 , when y = 15

Find the radius of a circle that has a circumference of 16. the formula for the circumference of a circle is c = 2tr, where r is the radius and c is the circumference. the equation solved for r is r = c over 2π. r=4 r= 8 r=12 r= 16