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Law Incorporation [45]
3 years ago
7

The time for trucks to bring deliver concrete to certain site is uniformly distributed over the interval 50 to 75 minutes. What

is the probability that the time exceeds 65 minutes if it’s known that the time exceeds 55 minutes
Mathematics
1 answer:
lora16 [44]3 years ago
8 0

Answer:

Step-by-step explanation:

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Nathan had an infection, and his doctor wanted him to take penicillin. Because Nathan’s father and paternal grandfather were all
Sergio039 [100]
Let events
A=Nathan has allergy
~A=Nathan does not have allergy
T=Nathan tests positive
~T=Nathan does not test positive

We are given
P(A)=0.75  [ probability that Nathan is allergic ]
P(T|A)=0.98  [probability of testing positive given Nathan is allergic to Penicillin]

We want to calculate probability that Nathan is allergic AND tests positive
P(T n A)

From definition of conditional probability,
P(T|A)=P(T n A)/P(A)
substitute known values,
0.98 = P(T n A) / 0.75
solving for P(T n A)
P(T n A) = 0.75*0.98 = 0.735

Hope this helps!!
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3 years ago
When 31 times a number is increased by 40, the answer is the same as when 200 is decreased by the number
mojhsa [17]

31x+40=200-x\\32x=160\\x=160/32\\x=5

The number is 5.

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3 years ago
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OlgaM077 [116]
It is 3 cause i got it wrong and that was the right anser
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Subtract -2k3 + k2 - 9 from 5k3 - 3k + 7.
tankabanditka [31]
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15k-3k+7+6k-2k+9
sort them
15k-3k+6k-3k+7+9
short down by adding up the similar factors
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factorise
18(k+1)
both forms are right
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5/12lb of dog food in each container.

This seems like a division problem so you would take (5/4) and divide it by 3 to make 3 equal groups meaning 5/12lb would be in each container.

I hope this helps, good luck!
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3 years ago
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