2 years ago

The son is 20 years younger than the father, and 5 years ago he was 5 times younger than him. How old is each of them?

Mathematics

1 answer:

Hatshy [7]2 years ago

8 0

Answer:

wdym

Step-by-step explanation:

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Ugo [173]

The correct answer is y = 11

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2y + 7 = 3y − 4
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3 years ago

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leonid [27]

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3 years ago

At a manufacturing plant where switches are made, it is a known fact that 2% of all switches are defective. If two switches are

olchik [2.2K]

Answer:

The probability that exactly one switch is good is

$P(x) =0.0392$

Step-by-step explanation:

The probability that a switch is defective is:

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The probability that a switch is not defective is

$P(D') = 1-P(D)=0.98$

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