Plz help me this is 7th grade math
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Answers: 3
Mathematics, 21.06.2019 23:00
Solve for x: 5/3 x = 20/21 it's fraction. remember to simplify your fraction
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Mathematics, 22.06.2019 00:00
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
Mathematics, 22.06.2019 01:00
Triangles abd and ace are similar right triangles. witch ratio best explains why the slope of ab is the same as the slope of ac?
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Mathematics, 22.06.2019 02:40
Jenny made a scale drawing of a city. the scale she used was 5 inches = 1 yard. what is the scale factor of the drawing?
Answers: 3
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