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Varvara68 [4.7K]
4 years ago
5

X+3y=-5 4x-y=6 Solve using elimination

Mathematics
1 answer:
Airida [17]4 years ago
4 0

 x+3y=-5

4x-y= 6

--------------------

-4(x+3y=-5)

  4x-y=6

-----------------------

-4x-12y=20

4x-y=6                        the 4 y's will eliminate each other

--------------

0 -13y=26

-13y=26

y=26/-13

y=-2

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7 0
4 years ago
On a piece of graph paper, plot the following points: A (0, 0), B (5, 0), and C (2, 4). These coordinates will be the vertices o
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The triangle is an isosceles triangle and the four triangles are similar

<h3>How to determine the triangle type?</h3>

The coordinates are given as:

A (0, 0), B (5, 0), and C (2, 4).

Calculate the distance between the coordinates using:

d = \sqrt{(x_2 -x_1)^2 +(y_2 -y_1)^2

So, we have:

AB = \sqrt{(0 -5)^2 +(0-0)^2} =5

AC = \sqrt{(0 -2)^2 +(0-4)^2} =4.5

BC = \sqrt{(5 -2)^2 +(0-4)^2} =5

The above shows that two sides are congruent.

Hence, the triangle is an isosceles triangle

<h3>The midpoints of the sides</h3>

This is calculated using:

(x, y) = 0.5 * (x1 + x2, y1 + y2)

So, we have:

AB = 0.5 * (0 + 5, 0 + 0) = (2.5, 0)

AC = 0.5 * (0 + 2, 0 + 4) = (1, 2)

BC = 0.5 * (5 + 2, 0 + 4) = (3.5, 2)

From the attached graph, we can see that the triangles are similar

Read more about similar triangles at:

brainly.com/question/14285697

#SPJ1

6 0
2 years ago
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