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PilotLPTM [1.2K]
2 years ago
6

5 college students were asked how many hours of sleep did they get at night on the average the responses were a 7 hours 9 hours

5 hours 6 hours and 8 hours what is the average amount of hours of sleep do college students got in a night​
Mathematics
2 answers:
Galina-37 [17]2 years ago
7 0

7 Hours on Average

add up all the hours and you get 35

then divide 35 by the number of given hours which is 5

35/5 = 7

so the average amount of hours slept was 7

Nitella [24]2 years ago
3 0

Answer:

7 hours

Step-by-step explanation:

To find this average, add up the five data points given and divide your result by five (5):

(7 + 9 + 5 + 6 + 8) / 5 = 35 / 5 = 7

This group of students averaged 7 hours of sleep per night.

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PLEASE HELP I've tried everything 30 points!
Luda [366]

Answer:

(x+2)1x-8)=0

x=-2 or x=8

Step-by-step explanation:

The given quadratic expression is

2 {x}^{2}  - 12x - 32

We equate this expression to zero to get:

2 {x}^{2}  - 12x - 32 = 0

Let us divide through by 2 to get:

{x}^{2}  - 6x - 16 = 0

Split the middle term to get:

{x}^{2}  - 8x + 2x - 16 = 0

Factor

{x}(x - 8) + 2(x - 8) = 0

Factor further to get

(x - 8)(x + 2) = 0

The solution are

x =  - 2  \: and \: x = 8

7 0
2 years ago
I need help with this last question. Please help
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2 years ago
Preston has a car washing business. Last year he washed 20 cars a week. This year, he washed 1,200 cars. How many more cars did
kakasveta [241]

Answer:

He washed 160 more cars this year than last year.

Step-by-step explanation:

Last year:  He washed a total of 1,040 cars.

This year:  He washed a total of 1,200 cars.

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Seiji and Gavin both worked hard over the summer. Together they earned a total of $425. Gavin earned $25 more than Seiji.
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Answer:

Gavin earned $450

Step-by-step explanation:

If Seiji Earned $425 25+25=50

6 0
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Calculate the average rate of change for the function f(x)=x^4+3x^3-5x^2-2, from x=-1 to x=1
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1

∫ f(x) dx = x⁵/5 + 3x⁴/4 - 5x³/3

-1

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5 0
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