If the second equation is multiplied by 4 and then the equations are added, the result is _____. x + 4y = 1 x

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If the second equation is multiplied by 4 and then the equations are added, the result is _____. x + 4y = 1 x - y = -3 5x = -11 3x = -13 5x = -13

If the second equation is multiplied by 4 and then the equations are added, the result is 5x = -11, x + 4y = 1 x - y = -3. x*4 - y*4 = -3*4; 4x - 4y = -12; x + 4x + 4y - 4y = -12 + 1; 5x = -11

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Asked 6/23/2016 9:49:08 AM

Updated 6/26/2016 6:38:09 AM

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Venen

If the second equation is multiplied by 4 and then the equations are added, the result is 5x = -11, x + 4y = 1 x - y = -3.
x*4 - y*4 = -3*4;
4x - 4y = -12;
x + 4x + 4y - 4y = -12 + 1;
5x = -11

Added 6/26/2016 6:38:09 AM

This answer has been confirmed as correct and helpful.

Confirmed by Andrew. [6/26/2016 9:28:57 AM]

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The seventh term of a sequence whose first term is 1 and whose common ratio is 3 is 729.
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