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solong [7]
2 years ago
12

The equation of the line of best fit for a scatter plot is yˆ=−14x+10 where x is age in years and y is average number of hours o

f sleep per night. The data was gathered from children aged 1 year to 9 years old. What is the predicted number of average hours of sleep for a 8 year old?
1. 6 Hours
2. 7 Hours
3. 8 Hours
4. 9 Hours
Mathematics
1 answer:
son4ous [18]2 years ago
5 0

Hey there!

y = -1/4x + 10

Looking for the amount of hours of sleep for an 8 year old, so x is 8.

Solve for y:

y = -1/4(8) + 10

y = -2 + 10

y = 8

The predicted number of average hours of sleep for an 8 year old is 3. 8 hours.

Hope this helps!

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Vika [28.1K]

Answer:

the answer would be 4/10 but the simplified version would be 2/5.

Step-by-step explanation:

add up how many bows you have, that will be the denominator. Then, the numerator is the number of purple bows. and if your going to simplify it divide the numerator and denominator by 2.

5 0
3 years ago
Read 2 more answers
How do you simplify 50 1/2+ -12.3
levacccp [35]

50 1/2 = 50.5

50.5 + -12.3

When adding a negative number to a positive number, it basically becomes just subtraction so  50.5 + -12.3 means 50.5 - 12.3

50.5 - 12.3 = 38.2

3 0
2 years ago
Write the ratio 42 inches to 9 feet as a fraction in simplest form. Explain why you get the same result whether you convert feet
V125BC [204]
Let's convert one of these numbers:
1 foot = 12 inches

9 feet were 9*12=108 inches

so the ratio would be 42: 108

or we can simplify it: divide by 2:
21:54

divide by 3:
7:18

A ratio always stays the same no matter the unit or currency, so it doesn't matter which unit we convert it to.
4 0
2 years ago
Round 288 to the nearest tenth
cricket20 [7]
290

hopefully i could help ;)

6 0
3 years ago
Will give brainlst!!<br><br> Have a amazing day :) <br> Pls help
Nesterboy [21]

Answer:

Sorted Data Set: 2, 10, 12, 13, 14, 15, 17, 18, 18, 20, 21

Mean (Average) 14.545454545455

Median 15

Range 19

Mode 18, appeared 2 times

Geometric Mean 12.803503609558

Largest 21

Smallest 2

Sum 160

Count 11

First Quartile Q1 = 12

Second Quartile Q2 = 15

Third Quartile Q3 = 18

Interquartile Range IQR = 6

8 0
2 years ago
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