Answer:
1872
Step-by-step explanation:
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Define the two numbers
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Let one number be x and the other be y
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Form equations and solve
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x + y = -14 --------------- (1)
y - x = 12 ------------------(2)
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(1) + (2)
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2y = -2
y = -1
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Substitute y = -1 into (2)
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y - x = 12
-1 - x = 12
x = -1 -12
x = -13
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Answer: x = -13, y = -1
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Answer:
No lo se
Step-by-step explanation:
Using the binomial distribution, it is found that there is a 0.0555 = 5.55% probability that more than 3 of these selected children have three siblings.
<h3>What is the binomial distribution formula?</h3>
The formula is:


The parameters are:
- x is the number of successes.
- n is the number of trials.
- p is the probability of a success on a single trial.
In this problem, for the parameters, we consider that:
- 10% of the 9-year old children in a town have three siblings, hence p = 0.1.
- Fifteen 9-year old children are selected at random, hence n = 15.
The probability that more than 3 of these selected children have three siblings is given by:

In which:

Then:






P(X > 3) = 1 - 0.9445 = 0.0555
0.0555 = 5.55% probability that more than 3 of these selected children have three siblings.
More can be learned about the binomial distribution at brainly.com/question/24863377