What is the sum of the measure of the interior angles of an octagon

8x + 6 - 9x = 2 - x - 15

I have a 3 tier cake and each layer is 10 1/2 inches tall how many inches tall is the entire cake

F (x) = (x - 6) 2 (x + 2) 2

What is the 28% tax on a $600.000 cash prize?

A motorboat traveling with the current went 30 mi in 3 h. Against the current, it took 5 h to travel the same distance. Find the rate of the boat in calm water and the rate of the current.

The perimeter of a rectangle is 354 CM if the width of the rectangle is 82 centimeters what is its length

In a popular casino game, you can bet one whether a ball will fall in an arc on a wheel colored red, black, or green.

The ends of the base of an isoceles triangle are (2a, 0) and (0, a). the equation of one ide is x=2a. find the eqns of the base, the remaining sides and the coordinates of the vertex.

The scale factor of the blueprint of a garage door to the actual garage door is 0.05. the are of the actual garage door is 220 ft^2. What is the area of the garage door on the blueprint? A. 0.55ft^2 B. 5.5ft^2 C. 11ft^2 D. 55ft^2

Which of the following represents side lengths that form a Pythagorean triple? A. 7, 8, 9 B. 1, 2, 3 C. 4, 5, 6 D. 3, 4, 5