14) The cube root of 64 = 4, and the cube root of 27 = 3.
(4x)³ + (3)³
a = 4x, b = 3
(4x+3)(4x²-12x+9)
15) The cube root of 8 = 2, and the cube root of 125 = 5
So (2x)³ - (5)³
a = 2x, b = 5
(2x-5)(2x²+10x+25)
8x - 13y = 16
At the x intercept y = 0 so we have:-
8x - 13(0) = 16
8x = 16
x = 16/8 = 2
so the x intercept is at (2,0)
To minimize the cost, we take the straight distance from the refinery to the other side of the river as 2 km. Also, the 7 km will be the distance that has to be traveled by the pipeline in land. The total cost, C, is therefore,
total cost = (2 km)($800,000/km) + (7 km)($400,000 /km)
total cost = $4,400,000
Thus, the total cost of the pipeline is approximately $4,400,000.00.
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Bla 20 20
To find the circumference, multiply the diameter by PI.
20 cm x 3.14 = 62.8 cm.
The answer is C.