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Galina-37 [17]
3 years ago
15

Aidan rode his bike 2.3 km from home to the library.Then he biked to the park.When he left home, his odometer read 293.8 km.When

he reached the park, it read 308.2 km.How far from the library is the park?
Mathematics
1 answer:
Vinvika [58]3 years ago
4 0

Answer:

308.2 - 293.8 = 14.4 km

14.4 - 2.3 = 12.1

So the library is 12.1 km from the park.

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D. 11.8 cm

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Create a linear regression equation that can be used to model the amount of money in the account (the balance), y, based on the
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The regression equation is \^y = 1.56\^x + 1.29, and it will take 31 weeks to have $50.00

<u>(a) The linear regression equation</u>

To do this, we make use of a graphing calculator;

From the graphing calculator, we have the following calculation summary:

  • The sum of X = 45
  • The sum of Y = 83
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  • Mean Y = 8.3
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The regression equation is then represented as:

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b = \frac{128.5}{82.5}

b = 1.55758

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a= 8.3 - (1.56 \times 4.5)

a= 1.29091

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a= 1.29

This means that, the regression equation is \^y = 1.56\^x + 1.29

<u>(b) Predict the time to have $50.00</u>

This means that:

\^y = 50

So, we have:

50 = 1.56\^x + 1.29

Subtract 1.29 from both sides

48.71 = 1.56\^x

Divide both sides by 1.56

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Rewrite as:

\^x = 31.22

Approximate

\^x = 31

Hence, it will take 31 weeks to have $50.00

Read more about linear regression models at:

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