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The Pitney Pipe Company is one of...
Mathematics, 24.05.2021 23:40 bigworm60
Question 11 of 15 >
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The Pitney Pipe Company is one of several domestic manufacturer of PVC pipe. The lengths of these pipes are normally distributed with a mean
of 14cm and the variance was 0.01 cm. What percent of the observations will be between 13.85cm and 14.15cm?
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Mathematics, 21.06.2019 19:50, Roshaan8039
Prove (a) cosh2(x) − sinh2(x) = 1 and (b) 1 − tanh 2(x) = sech 2(x). solution (a) cosh2(x) − sinh2(x) = ex + e−x 2 2 − 2 = e2x + 2 + e−2x 4 − = 4 = . (b) we start with the identity proved in part (a): cosh2(x) − sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 − sinh2(x) cosh2(x) = 1 or 1 − tanh 2(x) = .
Answers: 3
Mathematics, 21.06.2019 22:00, huangjianhe135
The difference of two numbers is 40. find the numbers if 0.3 parts of one number is equal to 37.5% of the other one.
Answers: 1
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