Solve the problem.In a chemistry class, 7 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. 3.5 L
B. 7.0 L
C. 2.5 L
D. 4.5 L
Answer: A
Mathematics
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Convert the measurement as indicated. Round to the nearest tenth, if necessary.5.2 m to inches
A. 5.7 in. B. 187.2 in. C. 13.2 in. D. 204.7 in.
Mathematics
Find A, B, and C for the partial fraction decomposition.
= 
+ 
+ 
A. A = 
, B = 
, C = 2
B. A = 3, B = 1, C = 2
C. A = 1, B = 2, C = 3
D. A = 
, B = 2, C = 
Mathematics
Provide an appropriate response.Simplify 2log2(6x)
A. 1 B. 6x C. 2 D. 26
Mathematics
Solve the problem.A video camera is set up 70 feet at a right angle to a straight quarter-mile race track, as shown in the figure. The starting line is to the left, and the finish line is to the right. Through what angle must the camera rotate to film the entire race?
A. 161° B. 87° C. 171° D. 166°
Mathematics