The area of the trapezoid is 40 square units.

what is the height of the trapezoid? __ units

we know that

The area of a trapezoid is equal to

where

b1 and b2 are the parallel bases of the trapezoid

h is the height of the trapezoid

In this problem we have

substitute in the formula

Solve for h

therefore

the answer is

The height of the trapezoid is

l.ln.lln.k.nkl

step-by-step explanation:

answer: the price of one pound cabbage = $ 0.8

the point (10,8) represents that the cost of 10 pounds cabbage is $ 8

step-by-step explanation:

since, here is a proportional relation between the number of pounds of cabbage (x) and the price in dollars (y).

therefore, we can write,

⇒ y = k x

where k is the constant of proportionality.

now, point (5,4) is in the line.

thus, it will satisfies the above equation of line.

⇒ 4 = 5 k

⇒ k = 0.8

thus, the equation of the line is,

y = 0.8 x

a) for x = 1,

y = 0.8

therefore, the cost of one pound of cabbage is 0.8 dollars.

b) in the below graph (10,8) represents that the cost of 10 pounds of cabbage is 8 dollars.