In the following trapezoid ABDC, if the segment lengths of AC and BD are congruent and the degree measures of
angle A = 15x + 20 and angle C = 10x - 15, what is the degree measure of angle D?

answer: 48

just remember to use pemdas:

parentheses

expressions

multiplication

division

addition

subtraction

multiple all that

step-by-step explanation:

27×17

5/20 so 25%

step-by-step explanation:

b) k’(6, 4); l’(3, 3)

step-by-step explanation:

a 270° clockwise rotation maps every point (x, y) to (y, -x). (it negates the x-coordinate and then switches it and the y-coordinate.)

this means the endpoints of the side congruent to kl, k' and l', would be mapped as:

k'(-4, 6)→(6, 4)

l'(-3, 3)→(3, 3)