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3 years ago

Find the difference. -7 - (-9)

Mathematics

2 answers:

sasho [114]3 years ago

8 0

Answer: The answer is 2.

Step-by-step explanation: If you have 2 minuses together, then that actually means a plus. -7+9 is 2.

Dahasolnce [82]3 years ago

7 0

Answer:

-7-(-9) a negative and a negative makes a positive so the new question will be -7+9 which should equal -16?

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For mutually exclusive events as A1, A2, A3, etc, Bayes' theorem states:

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P(B|A) is a conditional probability: the likelihood of event B occurring given that A is true.

P(A) is the probability that A occurs

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For this problem:

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P(B|A₁) means the probability that the answer is correct when he knew the answer

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P(A₁|B) means the probability that he knew the answer when the answer was correct

Replacing everything in the Bayes' theorem you get:

$P(A_{1}|B)= \frac{P(B|A_{1})P(A_{1})}{P(B)}=\frac{(1)(p)}{p+\frac{1-p}{m}} =\frac{mp}{mp+1-p} =\frac{mp}{1+p(m-1)}$

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