Let's solve for x first via the perimeter.
2(3x+2) + 2(2x-2) = 60
6x + 4 + 4x -4 = 60
10x = 60
x = 6
Therefore the length is 3(6) + 2 = 20 and the width is 2(6) - 2 = 10.
Volume is length x width x height
20 x 10 x 6 = 1200
Your final answer should be 1200 cubic cm or D. Hope this helps!
Speed = (distance) / (time)
= (100 meters) / (5 seconds)
= 20 meters per second .
(about 44.74 miles per hour, rounded)
The blank space should be the common difference, or d. We can find that by what is being multiplied in the explicit, because it contains the common difference (at the end of the equation).
When looked at, d in the explicit formula is 4, so your answer would be 4.
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