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EastWind [94]
3 years ago
14

Yelena is able to run 8 miles.She trains so that each week she is able to run 2 more miles than she could the week before. How m

any weeks of training does it take for her to be able to run a 26-mile marathon?
Mathematics
2 answers:
VLD [36.1K]3 years ago
8 0

Answer:

9 weeks

Step-by-step explanation:

26-8=18

18/2=9

9 weeks

ankoles [38]3 years ago
3 0

Answer:30


Step-by-step explanation:


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The correlation coefficient between two quantitative variables is approximately 0.6. What does the value of this correlation coe
murzikaleks [220]

Answer:

The model does not fits the data well.      

Step-by-step explanation:

Correlation:

  • Correlation is a technique that help us to find or define a relationship between two variables.
  • It is a measure of linear relationship between two quantities.
  • A positive correlation means that an increase in one quantity leads to an increase in another quantity
  • A negative correlation means with increase in one quantity the other quantity decreases.

R-square, R^2

  • The quantity R-squared is an indicator of the predictive power of a model.
  • It explains the variation in the dependent variable due to independent variable.
  • It shows how well the model fits the data.
  • R-squared is also known as the  coefficient of determination.

R^2 = \text{(Correlation coefficient)}^2= (0.6)^2 = 0.36 = 36\%

Therefore, only 36% of the variations in the dependent variable is explained by the independent variable in the model which means more than 50% of variation cannot still be explained in the dependent variable.

Hence, the model does not fits the data well.

8 0
3 years ago
Use the equation s = m - 7 to find the value of s when m = 10.
fgiga [73]
S=3
I believe
Because 7-10=3 and it don’t change the other way I think hahaha
7 0
3 years ago
Read 2 more answers
What is the solution or solutions to 5x-y=-6 and   -2x+y=3?
sladkih [1.3K]
I would reccomend the app photo math its really easy to use and it answers questions like this. 
4 0
3 years ago
Read 2 more answers
Write six hundred fifty-eight and twenty-nine thousandths in standard form​
Pepsi [2]

Answer:

658.029

Step-by-step explanation:

hope this helps  (´▽`ʃ♡ƪ)

7 0
3 years ago
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Keith weighs 20 kg more than Beth,while henry weighs 30kg less than twice as much as Beth. If Keith and Henry weigh the same, ho
dybincka [34]

Answer:

50kg

Step-by-step explanation:

K = Keith  B = Beth  H = Henry

K = 20 + B

H = 2B - 30

K = H

20 + B = 2B - 30

B = 50kg

3 0
3 years ago
Read 2 more answers
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