Mathematics, 14.07.2019 10:00 jbehrens6538
Amanda composed 2 songs. the longer song is 126 seconds less than twice the length of the short song. the longer song lasts 286 seconds. how long is the shorter song.
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Arecipe uses 2 cups of sugar to make 32 brownies. how many cups of sugar are needed to make 72 brownies?
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The perimeter of a rectangle is 42 inches. if the width of the rectangle is 6 inches, what is the length
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Jim had 3,067.48 in his checking account he wrote a check to pay for two airplane tickets. his account now has 1,845.24.
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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?
Answers: 3
Amanda composed 2 songs. the longer song is 126 seconds less than twice the length of the short song...
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