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Arlecino [84]
3 years ago
10

A rectangular yard is 10 feet long by 7 feet wide. what is the ratio of the width of the yard to the perimeter of the yard?

Mathematics
1 answer:
Inga [223]3 years ago
7 0
I hope this helps you

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Step-by-step explanation:

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Jasmine wants to use her savings of $1128 to buy video games and music CDs. The total price of the music CDs she bought was $72.
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Complete the following table for residuals for the exponential function: f(x) = 49.3(1.47)
agasfer [191]

Answer:

Predicted values:

\hat y_1 = 49.3 (1.47)^1 =72.471

\hat y_2 = 49.3 (1.47)^2 =106.5324

\hat y_3 = 49.3 (1.47)^3 =156.6026

\hat y_4 = 49.3 (1.47)^4 =230.2058

\hat y_5 = 49.3 (1.47)^5 =338.4025

\hat y_6 = 49.3 (1.47)^6 =497.4517

\hat y_7 = 49.3 (1.47)^7 =731.254

\hat y_8 = 49.3 (1.47)^8 =1074.943

Residuals:

e_1 = 65-72.471=-7.471

e_2 = 90-106.5324=-16.5324

e_3 = 162-156.6026 = 5.3974

e_4 = 224-230.2058 = -6.2058

e_5 = 337-338.4025 = -1.4025

e_6 = 466-497.4617 = -31.4517

e_7 = 780-731.254 = 48.7459

e_8 = 1087-1074.493 = 12.0566

Step-by-step explanation:

For this case we assume the following exponential function:

\hat y_i = 49.3 (1.47)^x

Where x represent the hours and y the predicted values for each hour. We can find the estimated values like this:

\hat y_1 = 49.3 (1.47)^1 =72.471

\hat y_2 = 49.3 (1.47)^2 =106.5324

\hat y_3 = 49.3 (1.47)^3 =156.6026

\hat y_4 = 49.3 (1.47)^4 =230.2058

\hat y_5 = 49.3 (1.47)^5 =338.4025

\hat y_6 = 49.3 (1.47)^6 =497.4517

\hat y_7 = 49.3 (1.47)^7 =731.254

\hat y_8 = 49.3 (1.47)^8 =1074.943

Now we can find the residuals with this formula:

e_i = Y_i -\hat y_i

And replacing we got:

e_1 = 65-72.471=-7.471

e_2 = 90-106.5324=-16.5324

e_3 = 162-156.6026 = 5.3974

e_4 = 224-230.2058 = -6.2058

e_5 = 337-338.4025 = -1.4025

e_6 = 466-497.4617 = -31.4517

e_7 = 780-731.254 = 48.7459

e_8 = 1087-1074.493 = 12.0566

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