Answer:
3x³ - 14x² - 7x + d = (x + 1)(ax² + bx + c)
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(x + 1)(ax² + bx + c)
= ax³ + bx² + cx + ax² + bx + c
= ax³ + (a + b)x² + (b + c)x + c
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ax³ + (a + b)x² + (b + c)x + c = 3x³ - 14x² - 7x + d
=> a = 3
a + b = -14
b + c = -7
c = d
=> a = 3, b = -17, c = 10, d = 10
Two events are independent events if it is impossible for the two events to occur simultaneously.
B.
Two events are independent events if the occurrence of one event has no effect on the probability of the other.
C.
Two events are independent events if the intersection between the sample spaces of the two events is not empty.
D.
Two events are independent events if the union of the sample spaces of the two events is not empty.
B. is the correct answer
Step-by-step explanation:
Two events are independent events if the occurrence of one event has no effect on the probability of the other. This is a true statement. Everything else is false.
Hope I helped!
- She counted a liability as an asset.
- She counted an asset at a liability.
- Her answer should be positive.
Answer: The probability that he pianist will be a boy and the alternate will be a girl is 30%.
Explanation:
Since we have given that
Number of boys are auditioning to play the piano for a school production = 2
Number of girls are auditioning to play the piano for a school production = 3
Total number of candidates is given by
Now,
Let Event A denotes pianist will be a boy.
Let Event B denotes alternate will be girl.
Since Event A and B are independent events so,
So,
Probability that the pianist will be a boy and the alternate will be a girl is given by
Now, we have to change it into percent ,
Hence ,the probability that he pianist will be a boy and the alternate will be a girl is 30%.
The probability helps us to know the chances of an event occurring. The probability that the pianist will be a boy and the alternate will be a girl is 0.3.
The probability helps us to know the chances of an event occurring.
As there are 2 boys and 3 girls. And out of this total of 5 people, we need to know the probability of a boy being selected first. Therefore, the probability can be written as,
Now since one boy is already selected the number of choices will reduce to 4, therefore, the probability of selecting a girl next can be written as,
Thus, the probability that the pianist will be a boy and the alternate will be a girl can be written as,
Hence, the probability that the pianist will be a boy and the alternate will be a girl is 0.3.
Learn more about Probability: