Mathematics, 18.04.2021 14:00 jaici68
An aquarium of unknown number of fish inside There is black, gold, and red fish, if we are taking one fish randomly the probability of taking (black or red) is P(black or red) = 63 % the probability of taking up red fish is P(red) = 41 %
a) red or black : P(red or black) =
b) Black : P(black) =
c) Gold: P(gold) =
d) dark blue: P(dark blue) =
Answers: 1
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Abag contains 10 white golf balls and 6 striped golf balls. a golfer wants to add 112 golf balls to the bag. he wants the ratio of white to striped gold balls to remain the same. how many of each should he add?
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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
An aquarium of unknown number of fish inside There is black, gold, and red fish, if we are taking on...
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