The area of a trapezoid is given by the formula A = 1/2h (b_1+ b_2), where h represents the height and b_1 and b_2 represent the bases. If the area of the trapezoid is 54 cm^2, one base measures 8 cm, and the height measures 4 cm, determine the length of the other base.

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step-by-step explanation:

just for that im not answering

second option

step-by-step explanation:

the measures of a triangle equal 180. use that to find x.

2x+3x+4x=180

9x=180

9x/9=180/9

x=20

now you know x, you know angle a is 40°, angle b is 60°, angle c is 80°.

because angle a is 40°, the first option doesn't work.

because angle b is 60°, the second option does work.

when you add angle a and b, you get 100°. complementary means it equals 90°, so the third option doesn't work.

when you add angle a and c, you get 120°, which is not 100.