Mathematics, 19.03.2020 21:10 nally6636
Marcos purchases a top-up card for his pre-paid cell phone. His remaining balance, B, can be modeled by the equation B = 35 − 0.4 n , where n is the number of minutes he's talked since purchasing the card. How much money was on the card when he purchased it?
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Mathematics, 21.06.2019 19:50
What is the solution to the equation below? 3/x-2+6=square root x-2 +8
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
Mathematics, 21.06.2019 20:30
Ateacher brought a pack of 17 batteries . each calculator uses 3 batteries . how many calculator can the teacher fill with batteries
Answers: 2
Marcos purchases a top-up card for his pre-paid cell phone. His remaining balance, B, can be modeled...
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