Mathematics, 15.09.2019 21:20 extra678
The tompkins drove 104.25 mi to their mountain cabin. they averaged 52 mi/hr before lunch and averaged only 35 mi/hr in the mountains after lunch. if their afternoon drive took half the time of the morning drive, how far and how long did they drive on each part of the trip?
Answers: 3
Mathematics, 21.06.2019 18:50
Expresa commuter train leaves downtown sation and travels at a average speed of 55 miles per hour towards the north side sation, which is 50miles away. thirty minutes later, express commuter train #7 leaves north side and travels at a average speed of 35miles per hour towards downtown sation. at the moment the two trains pass each other, how far(in miles) is train #12 from the downtown sation and how long(in minutes) has the #12 train been traveling
Answers: 1
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
Mathematics, 21.06.2019 20:00
If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?
Answers: 1
The tompkins drove 104.25 mi to their mountain cabin. they averaged 52 mi/hr before lunch and averag...
English, 28.07.2020 17:01
Mathematics, 28.07.2020 17:01
Engineering, 28.07.2020 17:01
History, 28.07.2020 17:01
Mathematics, 28.07.2020 17:01
English, 28.07.2020 17:01
Biology, 28.07.2020 17:01
Mathematics, 28.07.2020 17:01
Mathematics, 28.07.2020 17:01
Engineering, 28.07.2020 17:01