Answer:
135 ft^2 (first answer choice)
Step-by-step explanation:
Convert the length of the 7 yd base to feet: 21 ft.
Then the average length of the trapezoid is (15 ft + 21 ft)/2 = 36/2 ft = 18 ft.
The area of the trapezoid is then (average length)(height), or
A = (18 ft)(7.5 ft) = 135 ft^2 (first answer choice)
82.5 ft²
The area (A) of a trapezoid is calculated as
A = h (b₁ + b₂)
where h is the perpendicular height and b₁, b₂ the parallel bases
Here h = 7.5, b₁ = 7 and b₂ = 15 , then
A = × 7.5 × (7 + 15) = 0.5 × 7.5 × 22 = 82.5 ft²
1 < a < 13/5
2 < 2a - 3(1 -a) < 10
2 < 2a - 3 + 3a < 10
2 < 5a - 3 < 10
2 + 3 < 5a - 3 + 3 < 10 + 3
5 < 5a < 13
5/5 < 5a/5 < 13/5
all we can really cancel is one of the (x-5) and the "x", is all.
A. Use inverse relationships to "undo" the operation.
I took the , and this was the correct answer. :)
