Solve the equation.
= 12
A. 
B. 
C. 
D. 
Answer: B
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Solve the problem.The length of time it takes college students to find a parking spot in the library parking lot follows a normal distribution with a mean of 6.5 minutes and a standard deviation of 1 minute. Find the probability that a randomly selected college student will take between 5.0 and 7.5 minutes to find a parking spot in the library lot.
A. 0.2255 B. 0.0919 C. 0.7745 D. 0.4938
Find an equation of variation for the given situation.y varies inversely as x and y = 0.9 when x = 0.7
A. y = 
B. y = 1.29x
C. y = 
D. y = 
Either the dimensions of two matrices or the matrices themselves are given. Find the dimensions of the product AB and the product BA. If either is not defined, say so.A is 2 × 1; B is 1 × 1.
A. AB is not defined; BA is 1 × 2. B. AB is 2 × 1; BA is not defined. C. AB is 2 × 2; BA is 1 × 1. D. AB is 1 × 2; BA is 1 × 1.
Solve.The house numbers of two adjacent homes are two consecutive even numbers. If their sum is 346, find the house numbers.
A. 171, 173 B. 172, 174 C. 172, 344 D. 173, 175