Solve the problem.In a chemistry class, 6 liters of a 4%-saline solution must be mixed with a 10% solution to get a 6% solution. How many liters of the 10% solution are needed?
A. 2.0 L
B. 3.0 L
C. 4.0 L
D. 6.0 L
Answer: B
Mathematics
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Use the addition property of equality to solve the equation.11s = 10s + 13
A. 13 B. 23 C. 14 D. -13
Mathematics
Use the given zero to find the remaining zeros of the function.f(x) = x4 - 21x2 - 100; zero: -2i
A. 2i, 5, -5 B. 2i, 10i, -10i C. 2i, 10, -10 D. 2i, 5i, -5i
Mathematics
Factor.4x2 - 4x - 24
A. (4x + 8)(x - 3) B. (4x + 2)(x - 12) C. 4(x - 2)(x + 3) D. 4(x + 2)(x - 3)
Mathematics
Solve the problem.A rectangular board is 12 by 20 units. How far from the long side of the board will the foci be located to determine the largest elliptical tabletop?
A. 2.0 B. 8.0 C. 4.0 D. 6.0
Mathematics