0.0176600442 thats the answer
<span>2(30)+2x=860
This is because the 4 sides of the rectangle add up to the perimeter.
The unknown side is x, and there are two of those, and there are also two sides of 30.
They all add up to the perimeter.
So:
2(30) + 2x = 860</span>
The trapezoid on the bottom right doesn’t belong. All the other quadrilaterals have opposite sides that are congruent.
Opposite interior angles are equal, so
4x - 10 = 2x + 20
2x - 10 = 20
2x = 30
x = 15
About 492 feet per minute
9 • 54.68066 = 492.126
Rounding to the nearest whole number gets you 492