Abcd is a trapezoid ab equals 1 cm and cd equals 5 cm in the area equals 7.5 what is the altitude of a trapezoid

Here we have to use the formula of area of trapezoid, which is

Where b1 and b2 are the two bases and h is the height or the altitude .

It is given that, Area =7.5 , b1 =1 , b2=5, and h is unknown .

Correct option is the second option .

x = -3

y = -18

step-by-step explanation:

to solve by substitution, substitute one variable and solve for the other. then substitute again to find the remaining variable.

x-1/3(3x-9) = -3 since y=3x-9 substittute y.

x-1/3(3x-9)=-3

x + x +3 = -3

2x+3=-3

2x+3-3= -3-3

2x=-6

x=-3

substitute again into y=3x-9

y=3(-3)-9

y=-9-9

y=-18