Mathematics, 04.08.2019 05:40 vicada2782
4red marbles, 6 blue marbles, and 9 yellow marbles. what is the ratio of red marbles to blue marbles
Answers: 1
Mathematics, 21.06.2019 17:00
Tiffany drives 285,120 feet before lunch and 628,320 feet after lunch. about how many kilometers does she drive all together
Answers: 1
Mathematics, 21.06.2019 19:30
Joel wants to buy a new tablet computer fram a store having a 20% off sale on all tablets. the tablet he wants has an original cost of $190. he also wants to make sure he has enough money to pay the 5% sales tax. part one joel uses the incorect expression 0.95(190)(0.8) to calculate that the tablet will cost him a total of $144.40. describe his error and write the correct expression part two how much will joel pay for the tablet show your work if you answer this question correctly you will receive a prize of 99 points good luck
Answers: 2
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
4red marbles, 6 blue marbles, and 9 yellow marbles. what is the ratio of red marbles to blue marbles...
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