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Naily [24]
3 years ago
10

MAP TESTING HELP

Mathematics
1 answer:
GREYUIT [131]3 years ago
7 0

Answer:

E is the answer

Step-by-step explanation:

hope it is helpful

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Kelly rows a boat at the rate of 7040 yards per hour. How fast did Kelly row in miles?
irakobra [83]

Answer:

4 mph

Step-by-step explanation:

yard → mile = divide the length value by 1760

7040 / 1760 = 4 miles per hour

6 0
3 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
A photocopy machine can print 735 copies in 7 minutes. What is the rate at which the machine prints the copies per minutes
qaws [65]

Answer:

105

Step-by-step explanation:

Divide 735 by 7

5 0
3 years ago
Read 2 more answers
if the 300 inspected light bulbs represent 20% of an hour's total production of light bulbs, how many light bulbs are produced i
KIM [24]
Hi there! 
So to get this we just need to multiply 300 by 5 because it is 1/5 of the hour work. 300 x 5 = 1500 light bulbs. Hope this helps!


6 0
3 years ago
The surface area of this rectangular prism of 5m,5m,4m
Blizzard [7]

Answer:

130 m^2 (meters squared)

4 0
2 years ago
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