m∠a = 42 and m∠c = 57. find m∠b. a. 81 b. 99 c. 132 d. 147

What is the slope of a line that is perpendicular to y = 3x + 1

The sum of the reciprocal of a positive number and the reciprocal of 2 more than the number is 3/4 equation: the number is

Atriangle has an area of 72 square inches. if the base of the triangle has a length of 18 inches, what is the height of the triangle? use the formula for the area of a triangle: area = (base)(height) type a numerical answer in the space provided. do not include the units or spaces in your answer.