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3 years ago

3x +2 = 9x + 20 for x

Mathematics

2 answers:

Semmy [17]3 years ago

7 0

Answer:

Use a calculator solved :)))

Step-by-step explanation:

VARVARA [1.3K]3 years ago

4 0

Answer:

x=-3

Step-by-step explanation:

3x+2=9x+20

3x-9x=20-2

-6x=18

X=-3

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Answer:

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Step-by-step explanation:

Let $E_1,E_2,E_3$ are the events that denotes the good drive, medium drive and poor risk driver.

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

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We have to find $P(E_1/A)$

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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

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