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sergiy2304 [10]
3 years ago
8

In the below system, solve for y in the first equation.

Mathematics
2 answers:
fiasKO [112]3 years ago
4 0
The correct answer should be A.
Mars2501 [29]3 years ago
3 0

Answer:

The answer is the option A

y=(1/3)x+2

Step-by-step explanation:

we have

x-3y=-6 -----> first equation

2x-7y=10 -----> second equation

Solve for y in the first equation

That means------> isolate the variable y in the first equation

x-3y=-6

3y=x+6

Divide by 3 both sides

y=(x+6)/3

y=(1/3)x+2

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Hatshy [7]
For the answer to the question above asking an<span> office supplies salesperson sold $1,284 in week 1, $976 in week 2, $489 in week 3 and $1,042 in week 4.
Is this an incomplete question or you are asking for the total sales?
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sertanlavr [38]

Answer:

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pashok25 [27]
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worty [1.4K]

The line of the best fit is y = 2100x -4166040 and the number of bottles is, 86460 which expect to sell in 2025

<h3>What is the line of best fit?</h3>

A mathematical notion called the line of the best fit connects points spread throughout a graph. It's a type of linear regression that uses scatter data to figure out the best way to define the dots' relationship.

We have data shown in the table:

To find the line of best fit, we will calculate its slope and y-intercept.

We know the slope is given by:

\rm m = \dfrac{n\sum xy-\sum x \sum y}{n \sum x^2 - (\sum x)^2}   where n = 5

After calculating, we get,

\rm n\sum xy-\sum x \sum y = 105000  and

\rm n \sum x^2 - (\sum x)^2 = 50

m = 105000/50 = 2100

For y-intercept b:

\rm b = \dfrac{\sum y -m \sum x}{n}

After calculating:

b = -4166040

The line becomes:

y = 2100x -4166040

If x = 2025 put this value in the line, we get:

y = 86460

Thus, the line of the best fit is y = 2100x -4166040 and the number of bottles is, 86460 which expect to sell in 2025

Learn more about the line of best fit here:

brainly.com/question/14279419

#SPJ1

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Solve this problem, and identify the percent, amount and base.<br> What percent of 50 is 20
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