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3 years ago

11

I dont understand the elimanation method can someone explain?

2 answers:

Lesechka [4]3 years ago

3 0

The best way I can explain the elimination method is, it's a method where you either add or subtract equations in order to get rid of a variable.

Igoryamba3 years ago

3 0

For elimination you would be canceling out your x or your y. When canceling out one of them you would then be solving for whatever variable is left over. Say you have your y left over and you solved it already, you will take whatever you got for your y and plug it into whichever equation is easiest to solve for x. Once you have both of your variables, y and x, that would be your coordinate.
HOPE THIS HELPS! ^_^

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Step-by-step explanation:

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3 years ago

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lesya692 [45]

Answer:

Step-by-step explanation:

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3 years ago

What is the area of this triangle ?

oee [108]

Answer:

Area of triangle is 9.88 units^2

Step-by-step explanation:

We need to find the area of triangle

Given E(5,1), F(0,4), D(0,8)

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$Area\,\,of\,\,triangle =\sqrt{s(s-a)(s-b)s-c)} \\where\,\, s = \frac{a+b+c}{2}$

We need to find the lengths of side DE, EF and FD

Length of side DE = a = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side DE = a = $=\sqrt{(5-0)^2+(1-8)^2}\\=\sqrt{(5)^2+(-7)^2}\\=\sqrt{25+49}\\=\sqrt{74}\\=8.60$

Length of side EF = b = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side EF = b = $=\sqrt{(0-5)^2+(4-1)^2}\\=\sqrt{(-5)^2+(3)^2}\\=\sqrt{25+9}\\=\sqrt{34}\\=5.8$

Length of side FD = c = $\sqrt{(x_{2}-x_{1})^2+(y_{2}-y_{1})^2}$

Length of side FD = c = $=\sqrt{(0-0)^2+(8-4)^2}\\=\sqrt{(0)^2+(4)^2}\\=\sqrt{0+16}\\=\sqrt{16}\\=4$

so, a= 8.60, b= 5.8 and c = 4

s = a+b+c/2

s= 8.6+5.8+4/2

s= 9.2

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So, area of triangle is 9.88 units^2

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4 years ago

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ankoles [38]

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make a table of values

Step-by-step explanation:

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Answer:

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