Given : Trapezoid ABCD with base AB and CD and mA = (3x + 20).mZB = (4x), and m_D = (2x + 10). Find the value of .c. Then find the measure of angle C.​

my answer is$ 12

step-by-step explanation:

because 15 -2=12

what is the model?

step-by-step explanation:

answer: on graphs, the open and closed circles, or vertical asymptotes drawn as dashed lines us identify discontinuities.

as before, graphs and tables allow us to estimate at best.

when working with formulas, getting zero in the denominator indicates a point of discontinuity.

when working with piecewise-defined functions, check for discontinuities at the transition points where one piece ends and the next begins.

step-by-step explanation:

answer: 3 x 2 = 6 and 6+0

step-by-step explanation: sum equals addition and twice is multiplication so its

3 x 2 = 6

6+0= 6

identity property of zero