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astra-53 [7]
2 years ago
10

PLS HELP ME I NEED HELP

Mathematics
1 answer:
Brut [27]2 years ago
7 0

Answer:

≈ 7.71 ft

Step-by-step explanation:

The perimeter is half the circumference (C)  of the circle plus the diameter.

\frac{1}{2} C = \frac{1}{2} πd ( d is the diameter )

      = 0.5 × π × 3 = 1.5π

Thus

perimeter = 1.5π + 3 ≈ 7.71 ft ( to the nearest hundredth )

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Misha Larkins [42]

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P(E_1/A)=\frac{P(A/E_1)\cdot P(E_1)}{P(E_1)\cdot P(A/E_1)+P(E_2)P(A/E_2)+P(E_3)P(A/E_3)}

Substitute the values then we get

P(E_1/A)=\frac{0.30\times 0.01}{0.01\times 0.30+0.50\times 0.03+0.20\times 0.10}

P(E_1/A)=0.0789

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c.We have to find the probability Mr.Brophy is a poor driver

P(E_3/A)=\frac{0.20\times 0.10}{0.038}=0.526

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3 years ago
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