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OLga [1]
3 years ago
14

On a test of 45 items jennifer got 27 correct what percent were incorrect

Mathematics
1 answer:
sergiy2304 [10]3 years ago
5 0
25/45 45 divided by 27
that is .6 make it a percent by moving to decimal places to the right
60.00
60%
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In a group of 28 students, 12 study both Art and Biology.
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Answer:

100%

Step-by-step explanation:

Use conditional probability:

P(B | A) = P(B and A) / P(A)

P(B | A) = (12/28) / P(A)

We need to find the probability that a student studies art.

P(A or B) = P(A) + P(B) − P(A and B)

24/28 = P(A) + (12+12)/28 − 12/28

P(A) = 12/28

P(B | A) = (12/28) / (12/28)

P(B | A) = 1

What this means is that all of the students who study art also study biology.

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Step-by-step explanation:

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3 years ago
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Answer:      -2.5,, -0.9,, -1/3,, 1.7,, 27/4

Step-by-step explanation:

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vredina [299]

Answer:

x=1

Step-by-step explanation:

22-18=4  18-18=/

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