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2 years ago

5

Which equation represents this situation? josé worked 2. 5 hours more than william. Together, they worked a total of 22 hours. W

illiam worked h hours.

1 answer:

alisha [4.7K]2 years ago

3 0

Answer:

2h + 2.5 = 22

Explanation:

William: h

Jose: h + 2.5

so

h + h + 2.5 = 22

2h + 2.5 = 22

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Let S represent studied for.

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Therefore, we need to find P(S|B):

$S|B = \frac{B|S \times S}{B|S \times S\; +\; B|S' \times S'} \\\\S|B = \frac{0.55 \times 0.6}{0.55 \times 0.6 \;+ \;0.2 \times 0.4}\\\\S|B =\frac{0.33}{0.33 + 0.08} \\\\S|B =\frac{0.33}{0.41}$

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Read more on probability here: brainly.com/question/25870256

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<u>Complete Question:</u>

At the beginning of the semester, a professor tells students that if they study for the tests, then there is a 55% chance they will get a B or higher on the tests. If they do not study, there is a 20% chance that they will get a B or higher on the tests. The professor knows from prior surveys that 60% of students study for the tests. The probabilities are displayed in the tree diagram.

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