Solve the problem.A contractor mixes concrete from bags of pre-mix for small jobs. How many bags with 9% cement should he mix with 8 bags of 13% cement to produce a mix containing 11% cement?
A. 21 bags
B. 16 bags
C. 10 bags
D. 8 bags
Answer: D
You might also like to view...
At what points is the given function continuous?f(x, y) = 
A. All (x, y) such that x ? - y B. All (x, y) such that x ? y C. All (x, y) ? (0, 0) D. All (x, y)
Write the equation for the plane.The plane through the point A(2, 10, 2) perpendicular to the vector from the origin to A.
A. 2x + 10y + 2z = 
B. 2x + 10y + 2z = 108
C. 2x + 10y + 2z = -108
D. 2x + 10y + 2z = 14
Match the given function to its graph.1) y = 1 + sin x2) y = 1 + cos x3) y = -1 + sin x4) y = -1 + cos xA B
CD
A. 1B, 2D, 3C, 4A B. 1A, 2B, 3C, 4D C. 1A, 2D, 3C, 4B D. 1A, 2C, 3D, 4B
Solve the rational inequality. Write the solution set using interval notation; then graph the solution set on a number line.
? 4x
A. [0, 5] ? [7, ?)
B. (-?, 5] ? [7, ?)
C. (-?, 0] ? [5, 7)
D. [7, ?)