Which equation illustrates the additive inverse property? select one of the options below as your
a. c + d = d + c
b. c × d = d × c
c. -c + (-c) = 0
d. d + (-d) = 0

In trapezoid efgh, m∠hef=(4x2+16)∘ and m∠gfe=(5x2+12)∘. find the value of x so that efgh is isosceles.

Determine the volume of a cylinder bucket if the diameter is 8.5 in. and the height is 11.5 in.

The function a represents the cost of manufacturing product a, in hundreds of dollars, and the function b represents the cost of manufacturing product b, in hundreds of dollars. a(t) = 5t + 2 b(t) = 7t - 2t +4 find the expression that describes the total cost of manufacturing both products, a(t) + b(t). a. 7t^2 - 7t + 2 b. 7t^2 + 3 +6 c. 7t^2 + 7t - 6 d. 7t^2 - 3t + 6