Factor the polynomial completely.4x3 + 12x2y - 40xy2
A. (x - 2y)(4x2 + 20xy)
B. 4x(x - 2y)(x + 5y)
C. (4x2 + 8xy)(x - 5y)
D. 4x(x + 2y)(x - 5y)
Answer: B
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Solve the problem.A swimming pool has a rectangular base 14 ft long and 28 ft wide. The sides are 5 ft high, and the pool is full of water. How much work will it take to lower the water level 2 feet by pumping the water out over the top of the pool? Assume that the water weighs Give your answer to the nearest ft ? lb.
A. 611,520 ft ? lb B. 24,461 ft ? lb C. 48,922 ft ? lb D. 305,760 ft ? lb
Perform the indicated operation.
A. p - 4
B. p - 5 +
C. p + 4 +
D. p - 4 +
Solve.xy = 6x + y = 5
A. x = 3, y = -2; x = 2, y = -3 B. x = 3, y = 2; x = 2, y = 3 C. x = -3, y = -2; x = -2, y = -3 D. x = -3, y = 2; x = -2, y = 3
Find area of figure. Round to the nearest hundredth if necessary.Find the area of a rectangle measuring 5.8 yd by 21.41 yd.
A. 33.64 yd2 B. 248.356 yd2 C. 124.178 yd2 D. 27.21 yd2