Mathematics, 14.11.2019 05:31 10242000cw
Florence has at most $60 to spend on clothes. she wants to buy a pair of jeans for $22 dollars and spend the rest on t-shirts. each t-shirt costs $8. write an inequality for the number of t-shirts she can purchase.
Answers: 1
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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) = .
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When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years
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Mathematics, 22.06.2019 00:30
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Florence has at most $60 to spend on clothes. she wants to buy a pair of jeans for $22 dollars and s...
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