A cross section of an attic is shaped like a trapezoid. It has an area of 37.4 square meters. One base is 6.4 meters and the other base 12.3 meters long. What is the height of the cross section

4m

Step-by-step explanation:

see image. The area of the trapezoid is

Area=1/2 (b1 + b2)h

We can fill in the area and the two bases that were given. Then we solve for h to find the height.

37.4 = 1/2 (6.4+12.3)h

Add inside the ( ).

37.4 = 1/2 (18.7)h

Multiply

the 1/2 × 18.7

37.4 = 9.35h

Divide by 9.35

37.4/9.35 = h

4 = h

The height is 4 meters

the answer is:

mean: 6

mad: 2.14

all three statements are true

step-by-step explanation:

a shipping fee of 5% is charged online with every item purchased online

first let's just take each option and calculate them based on this, to see if the answers matched

keith buys a 40 dollar book

40 x 0.05 = 2

therefore there will be a two dollar fee on keith's book

40 + 2 =42

the first statement is true

a chair costs $80

80 x 0.05 = 4

80 + 4 = 84

the second statement is true

george buys a 20 dollar calculator

20 x 0.05 = 1

20 + 1 = 21

the third statements are true

all three statements are true