The amount of time a checkout clerk at a cash register at Wal-Mart spends with each customer has a population mean 3.10 minutes and a standard deviation 0.40 minute. Assume that amount of time spent with each customer is normally distributed. If you select a random sample of 16 customers. What is the probability that the mean time spent per customer is less than 3 minutes.

the equation cos(35) =a/25 can be used to find the length of bc what is the length of bc? round to the nearest tenth

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goog may be able to you find that answer

1^3 + 2^3 + 3^3 +4^3 = (1+2+3+4)^2

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i am only able to answer the first part. i am not sure about the second part. sorry

the answer is a.

135 and 80

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