Solve the problem.How many liters of 80% hydrochloric acid must be mixed with 40% hydrochloric acid to get 15 liters of 65% hydrochloric acid? Write your answer rounded to three decimals.
A. 4.688 L
B. 8 L
C. 3.125 L
D. 9.375 L
Answer: D
Mathematics
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Find the volume.
A. 81 cm3 B. 19,683 cm3 C. 729 cm3 D. 1458 cm3
Mathematics
Use a calculator to find the trigonometric values. Express your answers in hundredths.cos 37°
A. 0.65 B. 0.77 C. 0.80 D. 0.92
Mathematics
Use the graph to answer the question. 
What were the total sales for the first 6 months of 2006?
A. $366,000 B. $240,000 C. $46,000 D. $290,000
Mathematics
Find all the zeros of the polynomial function.P(x) = 2x3 - 9x2 + 30x - 13
A. 
B. 2 + 3i, 2 - 2i
C. 
, 2 + 3i, 2 - 2i
D. 
, 2 + 3i
Mathematics