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3 years ago

What is the surface area of the soild?

Mathematics

1 answer:

zheka24 [161]3 years ago

7 0

27+27+15+15+45+45

Answer 174

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Answer:

1.(-4,8)

2.(-12,18)

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Step-by-step explanation:

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20/9

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3 years ago

A human gene carries a certain disease from the mother to the child with a probability rate of 42%.That is, there is a 42% chanc

soldi70 [24.7K]

Answer:

Option B.

Step-by-step explanation:

It is given that there is a 42% chance that the child becomes infected with the disease.

Let A be the event that the child becomes infected with the disease.

$P(A)=42%=0.42$

A' be the event that the child is not infected.

$P(A')=1-P(A)=1-0.42=0.58$

Assume that the infections of the three children are independent of one another.

Let X be the number of children get the disease from their mother.

The probability that all three children are free from disease is

$P(X=0)=P(A')\cdot P(A')\cdot P(A')=0.58\cdot 0.58\cdot 0.58=0.195112$

We need to find the probability that at least one of the children get the disease from their mother.

$P(X\ge 1)=1-P(X=0)$

$P(X\ge 1)=1-0.195112$

$P(X\ge 1)=0.804888$

$P(X\ge 1)\approx 0.805$

The probability that at least one of the children get the disease from their mother is 0.805.

Therefore, the correct option is B.

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4 years ago