4 years ago

Can someone help me with this question

Mathematics

2 answers:

Ilya [14]4 years ago

8 0

Trinomials simply have 3 terms. The answer is C

sineoko [7]4 years ago

5 0

A trinomial has 3 terms. 5x^2 is the first, 3x is the second, 6 is the third. The other answers don't have 3 terms. So the answer is C. Hope this helps! ;)

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Question 12 (1 point) Given P(A) 0.34, P(A and B) 0.27, P(A or B) 0.44, what is P(B)? Answer in decimal form. Round to 2 decimal

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Answer: The required probability of event B is P(B) = 0.37.

Step-by-step explanation: For two events A and B, we are given the following probabilities :

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We are to find the probability of event B, P(B) = ?

From the laws of probability, we have

$P(A\cup B)=P(A)+P(B)-P(A\cap B)\\\\\Rightarrow 0.44=0.34+P(B)-0.27\\\\\Rightarrow 0.44=0.07+P(B)\\\\\Rightarrow P(B)=0.44-0.07\\\\\Rightarrow P(B)=0.37.$