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Dahasolnce [82]
3 years ago
15

The typical amount of sleep per night for college students can be assumed to be normally distributed with a mean of 7 hours and

a standard deviation
of 1.2 hours. From the Standard Deviation Rule, we know that about 95% of the college students typically sleep between:
A 5.8 and 8.2 hours per night
B 4.6 and 9.4 hours per night
C 6 and 8 hours per night
Dit is impossible to determine the answer from the given information.
Mathematics
1 answer:
12345 [234]3 years ago
7 0

Answer:

B 4.6 and 9.4 hours per night.

Step-by-step explanation:

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Allie bought a 5-pound bag of trail mix. She gave 12 ounces of trail mix to Justin. Then she put the rest of the trail mix into
trapecia [35]
To solve this problem, you will first want to convert 5 pounds into ounces. To do this, first determine how many ounces is in 1 pound.

There are 16 ounces in 1 pound, so to convert 5 pounds into ounces, you simply have to multiply 5 × 16. This will give you 80 ounces total.

Allie give 12 ounces away, so you must first subtract 12 ounces from your total (80 ounces). 80 - 12 gives us 68 ounces.

Allie then divides the trail mix up into 4 ounce portions. To figure out how many small bags she can make, you simply divide your new total (68 ounces) by 4. 

68 ÷ 4 = 17

Allie made 17 small bags. 
3 0
3 years ago
PLEASE HURRY......What is the absolute value of –8? Use the number line to help answer the question. A number line going from ne
Hatshy [7]

Answer:

8

Step-by-step explanation:

8 0
3 years ago
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Find the solution of:
iogann1982 [59]
6 / (x+1) = 1/2
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5 0
3 years ago
What is the effect on the area of a rectangle if the dimensions are doubled?
alisha [4.7K]
Let x be the length and y be the width of a rectangle.
Area = xy

When x and y are doubled
Length = 2x and Width = 2y
Area = 2x x 2y
Area = 4xy

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Answer: When the dimension is doubled, the area is 4 times the original.
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8 0
4 years ago
The total cost to play paintball can be represented by the expression (48x+54). If Rocco and five friends split the cost equally
KonstantinChe [14]

Answer:

8x + 9

Step-by-step explanation:

The total number of people splitting the cost equally = Rocco and five friends = 6 people

The total cost to play paintball can be represented by the expression (48x+54)

The cost for each person is calculated as: The total cost to play paintball/ Total number of people

= (48x+54)/6

= 48x/6 + 54/6

= 8x + 9

Therefore, the cost for each person is

8x + 9

6 0
3 years ago
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