Solve the problem.A chemist needs 50 milliliters of a 53% solution but has only 49% and 59% solutions available. How many milliliters of each should be mixed to get the desired solution?
A. 40 mL of 49%; 10 mL of 59%
B. 20 mL of 49%; 30 mL of 59%
C. 30 mL of 49%; 20 mL of 59%
D. 10 mL of 49%; 40 mL of 59%
Answer: C
You might also like to view...
In the figure below, R = 470 ê and é = -52ø. Find Z.
a. 370 ê
b. 228 ê
c. 763 ê
d. 596 ê
e. 698 ê
Simplify.-5x - 4(x + 4y)
A. -9x - 16y B. -6x - 16y C. -9x + 16y D. -9x + 4y
Solve the application problem. Round to the nearest cent.
Charles wants to retire in 17 years. At that time he wants to be able to withdraw $22,000 at the end of each year for 16 years. Assume that money can be deposited at 10% per year compounded annually. What exact amount will Charles need in 17 years?
A. $267,878.38 B. $167,333.76 C. $176,474.10 D. $172,121.62
Solve the system.
A. x = -5, y = 1, z = -1, w = 0 B. x = -10, y = 0, z = -2, w = 1 C. x = 0, y = -5, z = 1, w = 5 D. x = 5, y = 3, z = -1, w = -1