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juin [17]
3 years ago
6

Jason and Marc each bought a new video game for $40.

Mathematics
2 answers:
omeli [17]3 years ago
7 0

Answer:

2 dollars more

Step-by-step explanation:

0.25×40=10

0.25×40=12

12-10=2

elena-s [515]3 years ago
4 0

Answer:2.50 more dollars then Marc

Step-by-step explanation:

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xeze [42]

Answer:

Lines A and B form a consistent independent system

Step-by-step explanation:

we know that

A consistent system of equations has at least one solution

In this problem

The system of Line A and Line B has only one solution, since it has only one point of intersection.

and the Line A is different to Line B

therefore

Lines A and B form a consistent independent system

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3 years ago
X/x+1-1/x-1+2x/x^2-1
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Answer:

Input:

x/x + 1 - 1/x - 1 + 2×x/x^2 - 1

Result:

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A regression analysis between weight (y in pounds) and height (x in inches) resulted in the following least squares line: ŷ = 13
Lunna [17]

Answer:

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And for this case the interpretation for the slope would be that for every unit that the height in inches increase then the weight in pounds increase 6 units.

For the intercept of 135 represent the amount initial amount of weight for the scale.

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:

m=6

The means for x and y are given by:

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

\bar y= \frac{\sum y_i}{n}

And we can find the intercept using this:

b=\bar y -m \bar x

For this case we know that the line adjusted is:

y=6x +135

And for this case the interpretation for the slope would be that for every unit that the height in inches increase then the weight in pounds increase 6 units.

For the intercept of 135 represent the amount initial amount of weight for the scale.

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