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Licemer1 [7]
3 years ago
12

mary is eighteen years older than her son. she was three times as old as he was one year ago.How old are they now?

Mathematics
1 answer:
zimovet [89]3 years ago
4 0

Answer:

<h2>The son is 10 Mary is 28</h2>

Step-by-step explanation:

I hope dis helps

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Answer:

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Answer:

Explained below.

Step-by-step explanation:

Denote the variable as follows:

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N = did not ate breakfast

(a)

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(b)

Compute the probability that a randomly selected student is female and ate breakfast as follows:

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(c)

Compute the probability a randomly selected student is male, given that the student ate breakfast as follows:

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(d)

Compute the probability that a randomly selected student ate breakfast, given that the student is male as follows:

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(e)

Compute probability of the student selected "is male" or "did not eat breakfast" as follows:

P(M\cup N)=P(M)+P(N)-P(M\cap N)\\\\=\frac{n(M)}{N}+\frac{n(N)}{N}-\frac{n(M\cap N)}{N}\\\\=\frac{n(M)-n(N)-n(M\cap N)}{N}\\\\=\frac{154+132-77}{330}\\\\=0.633

(f)

Compute the probability of "is male and did not eat breakfast as follows:

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4 0
3 years ago
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Answer:

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