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Inessa05 [86]
3 years ago
12

Use elimination to solve the system of equations given by -7x + 3y = 14 and 7x - 2y = -14.

Mathematics
1 answer:
Bogdan [553]3 years ago
4 0

The coefficients of x are already opposites, so you can simply add the two equations to eliminate x.

... (-7x +3y) + (7x -2y) = (14) + (-14)

... y = 0 . . . . . . . simplify

... -7x + 3·0 = 14  . . . . substitute the value of x into the first equation

.. x = 14/(-7) = -2

The solution is (x, y) = (-2, 0).

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According to the scatterplot below, which statement is correct?
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Hey there

Step-by-step explanation:

The input, or independent variable, is years in operation.

Step-by-step explanation:

In an ordered pair (x, y),  the independent variable or input is x  and y is the dependent variable or the output.

Therefore, the values on x-axis determine the results or output on y-axis.

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Even without the graph, the correct statements i:

The input, or independent variable, is years in operation.

- brainly user

8 0
2 years ago
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A line with a slope of – 5 passes through the points (3,n) and (4, – 5). What is the value of n?
masha68 [24]

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40 points and brainliest!!!!
lana [24]

Answer:

Option (4).

Step-by-step explanation:

In the figure attached,

Two right triangles ΔXYZ and ΔTUV have been given,

Given:

1). m∠Y = m∠U = 30°                  

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Option (4) is the correct option.

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