(-6) x 9 - (-9) + (-10) ÷ (8 + (-3))
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Answers: 2
Mathematics, 21.06.2019 23:20
Suppose a laboratory has a 30 g sample of polonium-210. the half-life of polonium-210 is about 138 days how many half-lives of polonium-210 occur in 1104 days? how much polonium is in the sample 1104 days later? 9; 0.06 g 8; 0.12 g 8; 2,070 g
Answers: 1
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 04:50
What is the equation of the line written in general form? 0-x+y-2-2 ox+y-2=0 02x+4-2=0
Answers: 2
Mathematics, 30.05.2020 22:00
Mathematics, 30.05.2020 22:00
Mathematics, 30.05.2020 22:00
Business, 30.05.2020 22:00
Mathematics, 30.05.2020 22:00
Mathematics, 30.05.2020 22:00
Mathematics, 30.05.2020 22:00