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Ymorist [56]
3 years ago
8

5x + 2y = -5 X + 3y = 1

Mathematics
1 answer:
balu736 [363]3 years ago
7 0

Answer:

(-17/13, 10/13)

Step-by-step explanation:

Next time, please include more info regarding what you're supposed to do.  I will assume that the instructions said "solve this system of linear equations using elimination by addition and subtraction."

Multiply all three terms of the second equation by -5.  Then the system looks like:

5x + 2y =     -5

-5X + -15y = -5

Next, combine these two equations:

5x + 2y =     -5

-5X + -15y = -5

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

       -13y = -10

Dividing both sides by -13 yields y = 10/13.

Substituing 10/13 for y in the second equation, we get:

x + 3(10/13) = 1

Multiplying all three terms by 13 eliminates fractions:

13x + 30 = 13, or 13x  = -17.  Then x = -17/13, and the solution is

(-17/13, 10/13)

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The answer will stay the same because you can't combine like terms.
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~JZ
Hope it helps
3 0
3 years ago
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attashe74 [19]

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3 years ago
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Dennis_Churaev [7]

Answer:

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Step-by-step explanation:

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and then you simplify it to:

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<em><u>If you found this helpful please give it a thanks </u></em>

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8 0
3 years ago
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strojnjashka [21]
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so the longest side is 36

36 must be less than the sum  of 15 and 20
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36<35
false

therfor it cannot form a triangle
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