Solve by factoring.x2 + 48 = 16x
A. {-4, -12}
B. {4, 12}
C. {1, 48}
D. {-48, -1}
Answer: B
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Solve the problem.A $92,000 trust is to be invested in bonds paying 7%, CDs paying 6%, and mortgages paying 8%. The bond and CD investment together must equal the mortgage investment. To earn a $6560 annual income from the investments, how much should the bank invest in bonds?
A. $12,000 B. $10,000 C. $46,000 D. $34,000
Solve the problem.Chandra has 3 liters of a 28% solution of sodium hydroxide in a container. What is the amount and concentration of sodium hydroxide solution she must add to this in order to end up with 7 liters of 16% solution?
A. 4 liters of 7% solution B. 4 liters of 5% solution C. 4 liters of 8% solution D. 4 liters of 10% solution
Solve by elimination and check.x + y = -8x - y = 4
A. (2, -5) B. (-3, -5) C. No solution D. (-2, -6)
Find the volume of the rectangular solid.Find the volume of a box with the following dimensions:length = 16 ft, depth = 9 ft, height = 10 ft
A. V = 2560 ft3 B. V = 1440 ft3 C. V = 1296 ft3 D. V = 900 ft3