Mathematics, 11.01.2020 19:31 tlarson9872
Amy handed out 79 donuts on national donut day. she still had 147 left to give out. write and solve an equation to find out how much she started with.
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What could explain what happened when the time was equal to 120 minutes
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Which expression is equivalent to the expression shown?
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Mathematics, 21.06.2019 19:50
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
Amy handed out 79 donuts on national donut day. she still had 147 left to give out. write and solve...
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