Mathematics, 26.05.2021 07:30 david3253
A boat moves 12 kilometers upstream in the same
amount of time it moves 18 kilometers downstream. If
the rate of the current is 5 kilometers per hour, find the
rate of the boat in still water.
Fill in the blank for the correct
The speed of the boat is ___ km/h in still water.
Answers: 2
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Identify the number 127 as a rational or irrational. explain
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Prove (a) cosh2(x) ā sinh2(x) = 1 and (b) 1 ā tanh 2(x) = sech 2(x). solution (a) cosh2(x) ā sinh2(x) = ex + eāx 2 2 ā 2 = e2x + 2 + eā2x 4 ā = 4 = . (b) we start with the identity proved in part (a): cosh2(x) ā sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 ā sinh2(x) cosh2(x) = 1 or 1 ā tanh 2(x) = .
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Which two fractions are equivalent to 6/11? 6/22 and 18/33 12/22 and 18/33 12/22 and 18/22 3/5 and 6/10
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Hundred and tens tables to make 430 in five different ways
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A boat moves 12 kilometers upstream in the same
amount of time it moves 18 kilometers downstream. I...
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