Mathematics, 22.06.2019 13:00 ahmedislife

# At beginning of the year, lsabel had 120 in the bank, each week, she deposits another 20. is her account balance proportional to the number of the week of deposits? use the table below. explain your reasoning

Answers: 3

Mathematics, 21.06.2019 15:30

Amerchant has coffee worth $60 a pound that she wishes to mix with 50 pounds of coffee worth $90 a pound to get a mixture that she will sell for $70 a pound. how many pounds of the & 60 coffee should be used?

Answers: 3

Mathematics, 21.06.2019 18:30

Aswimming pool had 2.5 million liters of water in it. some water evaporated, and then the pool only had 22 million liters of water in it. what percent of the water evaporated?

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

At beginning of the year, lsabel had 120 in the bank, each week, she deposits another 20. is her acc...

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