Solve the problem.How many liters of a 10% alcohol solution must be mixed with 70 liters of a 60% solution to get a 30% solution?
A. 175 L
B. 10.5 L
C. 105 L
D. 17.5 L
Answer: C
Mathematics
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Solve the problem.Find the measure of an angle such that the difference between its supplement and 4 times its complement is 9°.
A. 63° B. 137° C. 31° D. 68.5°
Mathematics
What is element 
of the inverse of the following matrix?
?
?
A. - 
?
B. 
?
C. - 
?
D. 
?
E. 
?
Mathematics
Use the average daily balance method to compute the amount of interest that will be charged at the end of the billing cycle. Use a 365-day year.Month: July (31 days)Previous month's balance: $840Interest rate: 16%
A. $9.94 B. $8.75 C. $8.54 D. $8.47
Mathematics
Find the logistic function that satisfies the given conditions.Initial value = 15, limit to growth = 90, passing through (1, 45)
A. f(x) = 
B. f(x) = 
C. f(x) = 
D. f(x) = 
Mathematics