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Semmy [17]
3 years ago
12

Which point is a solution to the system of equations? y = 2x + 2 Y = 3x

Mathematics
1 answer:
Kay [80]3 years ago
7 0

Answer:

(2,6)

Step-by-step explanation:

y = 2x + 2

Y = 3x

2x+2=3x

2x-3x+2=0

-x+2=0

-x=-2

x=2

y=3(2)=6

                           

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Duval County Landscaping uses two different sized trucks to deliver mulch. The first truck can transport x cubic yards of mulch,
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For this case, the first thing we must do is define variables.
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Answer:

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Lunna [17]

Answer:

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Step-by-step explanation:

We assume that they use least squares in order to create the regression equation

For this case we need to calculate the slope with the following formula:

m=\frac{S_{xy}}{S_{xx}}

Where:

S_{xy}=\sum_{i=1}^n x_i y_i -\frac{(\sum_{i=1}^n x_i)(\sum_{i=1}^n y_i)}{n}

S_{xx}=\sum_{i=1}^n x^2_i -\frac{(\sum_{i=1}^n x_i)^2}{n}

With these we can find the sums:

And the slope would be:

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The means for x and y are given by:

\bar x= \frac{\sum x_i}{n}

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And we can find the intercept using this:

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