Mathematics, 09.01.2020 00:31 shaylakabler333
Casey has a bag that contains 3 white balls, 8 red, 2 blue, and
2 yellow. choose one ball out of the bag randomly and put it back.
she repeats the experiment 250 times.
a. what's the probability that casey chooses the white ball?
b. predict the number of times of a total of 250 that casey will
choose the white ball.
Answers: 2
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Atrain leaves little? rock, arkansas, and travels north at 90 kilometers per hour. another train leaves at the same time and travels south at 80 kilometers per hour. how long will it take before they are 680 kilometers? apart?
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Asunflower was 20 1/2 inches tall. over the next 6 months, it grew to a height of 37 inches tall. what was the average yearly growth rate of the height of the sunflower? ? plz write a proportion to solve i will give you 100 points
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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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Casey has a bag that contains 3 white balls, 8 red, 2 blue, and
2 yellow. choose one ball out...
2 yellow. choose one ball out...
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