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KiRa [710]
3 years ago
15

explain how estimated the quotient helps you place the first digit in the quotient of a division problems

Mathematics
1 answer:
Marysya12 [62]3 years ago
5 0
If i understood it right when you estimate the quotient it help you have an idea 
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Help! what is the right answer?​
egoroff_w [7]

Answer:

B

Step-by-step explanation:

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2 years ago
The time to fly between New York City and Chicago is uniformly distributed with a minimum of 120 minutes and a maximum of 150 mi
lara [203]

Answer:

a) 33.33%)

b) 135 minutes

c) 8.66 min

d) 50%

Step-by-step explanation:

a) the probability for a uniform distribution is

P(b<X<a) = (a-b)/(c-d) , where c and d are the maximum and minimum values

therefore the probability that the flight is more than 140 minutes ( and less than 150 since it is the maximum value)

P(140<X<150) = (a-b)/(c-d) = (150-140)/(150-120) = 10/30 = 1/3 (33.33%)

b) the mean (expected value) for a uniform probability distribution is

E(X) = (c+d)/2 = (120+150)/2 = 135 minutes

c)  the standard deviation for a uniform probability distribution is

σ²(X)= (c-d)²/12 = (150-120)²/12 = 75 min²

σ = √75 min² = 8.66 min

b) following the same procedure as in a)

P(120<X<135) = (a-b)/(c-d) = (135-120)/(150-120) = 15/30 = 1/2 (50%)

4 0
3 years ago
1. The diameter of a circle is 36 centimeters. Find the radius. (Section 13.1)
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Please answer the question below (the question is question 64)
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