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3 years ago

11

Alexis and tara both mine salt. alexis mines 300 pounds in 20 hours. tara mines 400 pounds in 40 hours. which of the following i

s correct?

1 answer:

Archy [21]3 years ago

7 0

Well, if both Alexis and Tara mine salt for 40 hours... they'd have mine 1,000 pounds of salt. Is this what you were looking for?

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Weather records show that the probability of rainfall in Florida in June is 0.86. What is the probability that it rains there in

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R - it is rain (probablity: 0.86)
N - it is not rain (probablity: 1-0.86 = 0.14)
You've got these cases:

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R R R R R R R N R R
. . .
N R R R R R R R R R - it is 10 cases. Probablity each case is
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It is 10 cases so you have to multiply by 10 and you get 0.36

There is also eleventh case:

R R R R R R R R R R

Probablity is (0.86)^10 approximately 0.22

Add these cases and you'll get your probablity: 0.36 + 0.22 = 0.58

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