Mathematics, 17.02.2020 22:28 aron4327
Kareem estimated he could buy a watch that cost 80$ only using his 3 gift cards. Kareem's estimate of 80$ reasonable because the total remaining balances for all three gift cards is approximately which is the cost of the watch he wants to buy. Kareem buy the watch only using his three gift cards.
Answers: 1
Mathematics, 21.06.2019 14:10
What is the perimeter, p, of a rectangle that has a length of x + 8 and a width of y − 1? p = 2x + 2y + 18 p = 2x + 2y + 14 p = x + y − 9 p = x + y + 7
Answers: 3
Mathematics, 21.06.2019 18:30
Two cyclists 84 miles apart start riding toward each other at the same. one cycles 2 times as fast as the other. if they meet 4 hours later, what is the speed (in mi/h) of the faster cyclist?
Answers: 1
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
Kareem estimated he could buy a watch that cost 80$ only using his 3 gift cards. Kareem's estimate o...
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