Solve using matrices.John has a jarful of quarters and nickels. There are 93 coins in the jar. The value of the coins is $15.25. How many of each type of coin?
A. 58 quarters and 35 nickels
B. 53 quarters and 40 nickels
C. 40 quarters and 53 nickels
D. 88 quarters and 5 nickels
Answer: B
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Solve the problem.Suppose a brewery has a filling machine that fills 12 ounce bottles of beer. It is known that the amount of beer poured by this filling machine follows a normal distribution with a mean of 11.14 onces and a standard deviation of 0.04 ounce. Find the probability that the bottle contains more than 11.14 ounces of beer.
A. 1 B. 0.4 C. 0 D. 0.5
Solve the formula for the specified variable.P = 2L + 2W for W
A. W = 
B. W = 
C. W = P - L
D. W = P - 2L
Multiply using the rules for special products.
A. 9r2 - s2 - 14s - 49 B. 9r2 - s2 - 7s - 49 C. 9r2 + s2 - 14s - 49 D. 9r2 - s2 - 15s - 49
Find a so that the statement is true.
A. 7 B. 4 C. 5 D. 6 E. 0