Mathematics, 31.07.2019 05:40 meijorjay94p2u2zy
Simplify 3[14/(4^2-3^2)-5] answer choices: a. -9 b. 27 c. 21 d. 6 pls lots of
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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?
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Simplify 3[14/(4^2-3^2)-5] answer choices: a. -9 b. 27 c. 21 d. 6 pls lots of...
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