Answer:
P(B) = 0.20
Step-by-step explanation:
For these events, which are not independent or mutually exclusive, the relation between the various probabilities is ...
P(A or B) = P(A) +P(B) -P(A and B)
Solving for P(B), we find ...
P(B) = P(A or B) +P(A and B) -P(A)
P(B) = 0.77 +0.13 -0.7 = 0.20
The probability of B is 0.20.
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<em>Additional comment</em>
The formula applies to independent and mutually exclusive events, as well. For independent events, P(A and B) = P(A)·P(B). For mutually exclusive events, P(A and B) = 0.
Option 2
ALD=BLD <span>equation is not necessarily true, all other remaining equations satisfy laws of reflection.</span>
The answer is A.
She had 250 after 1 month, and 350 after 3 months, so 350-250=100.
Divide 100 by 2 because it took her 2 months to get 100. 100/2= 50
She buys 50 stamps a month.
So if she has 250 after 1 month, you need to subtract 50 to get the 200 stamps given to her by her grandpa.
Answer:
It would be 6 because 20 divided by 10 is 2 so you multiply 3 by 2
Step-by-step explanation:
