Solve the problem.How many liters of a 10% alcohol solution must be mixed with 60 liters of a 70% solution to get a 20% solution?

A. 360 L
B. 36 L
C. 30 L
D. 300 L

Answer: D

Mathematics

List the factors of the number.28

A. 1, 2, 4, 7, 14, 28 B. 1, 2, 7, 14, 28 C. 1, 2, 4, 7, 8, 14, 28 D. 2, 7, 14, 28

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Mathematics

Write an inequality using the variable x that corresponds to the set graphed on the number line.

A. -4 ? x ? 0 B. -4 ? x < 0 C. -4 < x < 0 D. -4 < x ? 0

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Mathematics

Simplify the radical. Assume that all variables represent nonnegative real numbers.

A. 8m⁷n⁶
B. 8m⁸n⁶
C. 8m⁸n⁶
D. 8m⁹n⁷

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Mathematics

Determine the real solutions to the system of nonlinear equations.xy = 10x + y = -7

A. (-2, -5), (-5, -2) B. (2, 5), (5, 2) C. (-2, 5), (-5, 2) D. (2, -5), (5, -2)

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Mathematics