Mathematics, 12.03.2020 06:47 NicolasG
16. A telemarketer makes six phone calls per hour and is able to make a sale on 30% of these contacts. During the next two hours, find: a. The probability of making exactly four sales. b. The probability of making no sales. c. The probability of making exactly two sales. d. The mean number of sales in the two-hour period. Lind, Douglas. Basic Statistics for Business and Economics (p. 181). McGraw-Hill Education. Kindle Edition.
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Mathematics, 21.06.2019 16:00
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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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Mathematics, 22.06.2019 00:00
Heather is riding a quadratic function that represents a parabola that touches but does not cross the x-axis at x=-6
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16. A telemarketer makes six phone calls per hour and is able to make a sale on 30% of these contact...
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