Mathematics, 11.12.2020 01:00 1846252
1. An urn contains 15 balls identical in every way except color. There are 4 red balls, 5 green
balls, and 6 blue balls.
a) You draw 2 balls from the urn but replace the first before drawing the second. Find the
probability that the first ball is red and the second is green.
b)
Repeat part a, but do not replace the first ball before drawing the second.
Answers: 2
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Mathematics, 21.06.2019 18:30
The height of a flare fired from the deck of a ship in distress can be modeled by h(t)= -2(8t^2-52t-28), where h is the height of the flare above water and t is the time in seconds. a. find the time it takes the flare to hit the water.
Answers: 1
Mathematics, 21.06.2019 23:30
Adele is five years older than timothy. in three years, timothy will be 2/3 of adele’s age. what is adele‘s current age?
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Grace is standing 18 feet from a lighthouse and kelly is standing 10 feet from grace. the angle that grace looks up to see the top of the lighthouse is 45°. the angle that kelly looks up to see the top of the lighthouse is y°. find the height, h, of the lighthouse. find the angle, rounded to the nearest tenth of a degree, in which kelly looks up to the top of the lighthouse. to the nearest tenth of a degree, find the value of x° . in two or more sentences, explain your calculations
Answers: 1
1. An urn contains 15 balls identical in every way except color. There are 4 red balls, 5 green
bal...
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