First off, let’s convert -3 1/2 into -7/2, which is easier for calculation.
Lets give an easier example for a moment — imagine the water had risen by 12ft in 4 months. That means, on average, it rose about 3 feet each month (12/4 = 3). We do the same here — divide by 4 (or multiply by 1/4):
-7/2 * 1/4 = -7/8
So the water level decreased for about -7/8 feet each month on average.
Answer:
$520.96
Step-by-step explanation:
The composite is made up of 2 semicircles and a rectangle:
⇒ Radius of the circle = 2 ft
⇒ Length of the rectangle = 5 ft
⇒ Width of the rectangle = 4 ft
Area
⇒ π(2)² + (5 x 4)
⇒ 4π + 20
⇒ 32.56 ft²
Cost
= 32.56 x 16
= $520.96
The equation would be a-44=64÷4
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