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mylen [45]
3 years ago
6

Todd is training to bike in the Turkey Trot Bike Race and rode his bike 7 ¾ miles per hour for 2 2/3 hours. How many miles did T

odd bike? Express your answer as a decimal rounded to the nearest one thousandth.
Mathematics
1 answer:
trapecia [35]3 years ago
5 0
(7 3/4 mi/h)*(2 2/3 h) = 20 2/3

Todd rode 20.667 miles.
_____
A calculator that works with mixed numbers is a handy thing.
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We're told that

P(A\cap B)=0.15

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We make use of the addition rule and complementary probabilities to rewrite this as

P(A\cap B)=P(A\cap B^C)

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By the law of total probability,

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2P(B)=P(A\cup B)+[P(B)-P(A\cap B)]

\implies P(B)=P(A\cup B)-P(A\cap B)

\implies P(B)=0.94-0.15=\boxed{0.79}

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Answer:

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