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Aleks [24]
3 years ago
11

Can anyone help me? I need an exact answer, please no guesses. Thanks in advance

Mathematics
2 answers:
tia_tia [17]3 years ago
6 0
45 degrees
160 - 115
spin [16.1K]3 years ago
3 0
The answer is 20
180-160=20
x=20
b&c both equal 45
a straight angle = 180
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This question is incomplete because it was not written properly

Complete Question

A teacher gave his class two quizzes. 80% of the class passed the first quiz, but only 60% of the class passed both quizzes. What percent of those who passed the first one passed the second quiz? (2 points)

a) 20%

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Answer:

d) 75%

Step-by-step explanation:

We would be solving this question using conditional probability.

Let us represent the percentage of those who passed the first quiz as A = 80%

and

Those who passed the first quiz as B = unknown

Those who passed the first and second quiz as A and B = 60%

The formula for conditional probability is given as

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Where,

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Hence,

P(B|A) = 60/80

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cestrela7 [59]

Answer:

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Step-by-step explanation:

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