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Mathematics, 21.06.2019 19:00
You are at a restaurant and owe $38 for your meal. you want to leave a 20% tip. how much will your tip be?
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How are sas and sss used to show that two triangles are congruent?
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Mathematics, 21.06.2019 19:50
Prove (a) cosh2(x) β sinh2(x) = 1 and (b) 1 β tanh 2(x) = sech 2(x). solution (a) cosh2(x) β sinh2(x) = ex + eβx 2 2 β 2 = e2x + 2 + eβ2x 4 β = 4 = . (b) we start with the identity proved in part (a): cosh2(x) β sinh2(x) = 1. if we divide both sides by cosh2(x), we get 1 β sinh2(x) cosh2(x) = 1 or 1 β tanh 2(x) = .
Answers: 3
3/5 * 5/7 / 3/14 - 2/5...
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