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AleksAgata [21]
3 years ago
12

A letter to Europe from the United States cost $.94 to mail. A letter mailed within the United States cost $.44. Nancy mailed fi

ve letters for $3.70, some to Europe and some to the United States. How many letters did she send to Europe. Explain.
Mathematics
1 answer:
frosja888 [35]3 years ago
7 0

Answer:

3

Step-by-step explanation: i used my calculator

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The data set represents a progression of hourly temperature measurements.Use the regression equation to predict the temperature
zimovet [89]
I will attach google sheet that I used to find regression equation.
We can see that linear fit does work, but the polynomial fit is much better.
We can see that R squared for polynomial fit is higher than R squared for the linear fit. This tells us that polynomials fit approximates our dataset better.
This is the polynomial fit equation:
T(h)=20.2-3.6h-0.875h^2
I used h to denote hours. Our prediction of temperature for the sixth hour would be:
T(6)=20.2-3.6(6)-0.875(6)^2=-32.9
Here is a link to the spreadsheet  (<span>https://docs.google.com/spreadsheets/d/17awPz5U8Kr-ZnAAtastV-bnvoKG5zZyL3rRFC9JqVjM/edit?usp=sharing)</span>

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3 years ago
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charle [14.2K]
JK= 8, because x+3= 2x-5= 19
3 0
3 years ago
Help please please help
Semenov [28]

Answer:

Step-by-step explanation:

1,8

5,7

2,3

3 0
3 years ago
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Someone give me the answer
Mademuasel [1]

We want to begin with nine, which gives us as follows:

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Then, we want to subtract:

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The expression is 9 - x for the steps in the image given.

Hope this helps!! :)

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A 2-quart carton of pineapple juice costs $5.28. what is the price per cup
ololo11 [35]

Answer:

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Step-by-step explanation:

There are 8 cups in 2 quarts, so 5.28/8 is $0.66 per cup.

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