Mathematics, 27.02.2021 07:30, janeou17xn
Set up a system of linear equations to represent the scenario. Solve the system by using Gaussian elimination or Gauss-Jordan
elimination.
Robert stayed in three different cities (Washington, D. C., Atlanta, Georgia, and Dallas, Texas) for a total of 12 nights. He spent
three times as many nights in Dallas as he did in Washington. The total cost for 12 nights (excluding tax) was $1800. Determine
the number of nights that he spent in each city.
8 08 B & B
City
Washington
Atlanta
Dallas
Cost per Night
$220
$70
$180
Robert spent
night(s) in Washington, night(s) in Atlanta, and
night(s) in Dallas
Answers: 1
Mathematics, 21.06.2019 20:30, cogger9348
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Answers: 1
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Mathematics, 21.06.2019 23:30, Masielovebug
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Mathematics, 22.06.2019 00:00, xXwolfieplayzXx
Aspacecraft can attain a stable orbit 300 kilometers above earth if it reaches a velocity of 7.7 kilometers per second. the formula for a rocket's maximum velocity v in kilometers per second is vequalsminus0.0098tplusc ln upper r, where t is the firing time in seconds, c is the velocity of the exhaust in kilometers per second, and r is the ratio of the mass of the rocket filled with fuel to the mass of the rocket without fuel. find the velocity of a spacecraft whose booster rocket has a mass ratio of 20, an exhaust velocity of 2.1 km/s, and a firing time of 15 s. can the spacecraft achieve a stable orbit 300 km above earth?
Answers: 3
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