What is the sum of the measures of the interior angles of an dodecagon

13x + 8 - 3 equals 12x-4

Find 3x2 - y3 - y3 - z if x = 3, y = - 2, and z = - 5

Colon earns $7 per hour us $1.50 for each pizza delivery. The expression 7h+1.50d can be used to find the total earnings after h hours and d deliveries have been made. How much money will Colon earn after working 15 hours and making 8 deliveries?

What percent of $90 = $45

The equation is equivalent to u = rst. True / False

Find the area of the circle when C = π/6. Give your answer in terms of π.

What is the solution to the system of equations? 4x-8y=-16 x-2y=-8 a. Use the substitution method to justify that the given system of equations has no solution. b. What do you know about the two lines in this system of equations?

Of the items manufactured by a certain process, 20% are defective. Of the defective items, 60% can be repaired. a. Find the probability that a randomly chosen item is defective and cannot be repaired. b.

Find the value of x. (2x + 30°

Whats 9*2? i cant figure it out even with a calculator