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justhereforanswers13
31.01.2020 •
Mathematics
Solving systems of linear equations by graphing. 3y+4x=3 and x+3y=-6. can someone me with where the lines intersect and show me how they solved it on paper? i keep getting it wrong even though i think its right but i just need a second opinion
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Ответ:
3y+4x=3
x+3y=-6
Elimination is a way to remove any same variable with the same coefficient. In this case, there is 3y in both equations. In this case, we subtract to eliminate.
3y-3y+4x-x=3+6 It's plus 6 because two negatives become positive.
3x=9 Divide both sides by 3
x=3
Now you can find y.
x+3y=-6
3+3y=-6
3y=-9
y=-3
Therefore, the POI is (3,-3). I hope you understand this. Make sure to mark as brainliest.
Ответ:
Pi = 3.14
Radius= 13^2
3.14 x 169 = 530.66