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fredd [130]
3 years ago
10

-12+7=x+3 what does that equation equal (hint: im looking for the answer not what x equals) :)

Mathematics
1 answer:
Delicious77 [7]3 years ago
7 0
-5=-5

-12+7 = x+3
-5 = x+3
-5-3 =x
x = -8
-12+7 = -8 +3
-5 = -5
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dem82 [27]

Answer:

Step-by-step explanation:

From the information given:

the rate of the cars = \dfrac{1}{5} \ car / min = 0.2 \ car /min

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(a)

P(2 \ car \  in  \ 20 \  min) = \dfrac{e^{-0.20\times 20}\times (0.2 \times 20)^2}{2!}

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P ( 1 \ motorcycle \ in \ 20 \ min) = 0.3422

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c)

The probability of the 7th motorcycle after the arrival of the third motorcycle is:

P( 4  \ motorcyles \  in  \ 45  \ minutes) =\dfrac{e^{-0.0333\times 45}\times (0.0333 \times 45)^4}{4!}

P( 4  \ motorcyles \  in  \ 45  \ minutes) =0.0469

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d)

P(at least one other vehicle arrives between 3rd and 4th car arrival)

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