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olga_2 [115]
3 years ago
9

Please help me with this and Explain!

Mathematics
2 answers:
slavikrds [6]3 years ago
6 0
So a=25, b=12, c=4, d=4, right?

What you will do is 25 + (12 + 4) x 4
Of course, focus on the one with the parenthesis first.

nevsk [136]3 years ago
4 0
If a =25 b=12 c=4 d=4
You can just put these numbers
a+(b+c) x d=25+(12+4) x 4=25+16 x 4 =25+64=89
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mihalych1998 [28]

Answer:

0.1333 = 13.33% probability that bridge B was used.

Step-by-step explanation:

Conditional Probability

We use the conditional probability formula to solve this question. It is

P(B|A) = \frac{P(A \cap B)}{P(A)}

In which

P(B|A) is the probability of event B happening, given that A happened.

P(A \cap B) is the probability of both A and B happening.

P(A) is the probability of A happening.

In this question:

Event A: Arrives home by 6 pm

Event B: Bridge B used.

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60% of 1/6(Bridge B)

80% of 1/2(Bridge C)

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60% of 1/6. So

P(A \cap B) = 0.6*\frac{1}{6} = 0.1

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0.1333 = 13.33% probability that bridge B was used.

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4 0
3 years ago
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