3 years ago

How do I solve 4x+y=0 and 5x-y=9

1 answer:

Ann [662]3 years ago

6 0

$\left \{ {{4x+Y=0} \atop {5x-Y=9}} \right.$
$(4x+y=0) + (5x-y=9) \\ 9x+y-y=0+9 \\ 9x=9$
$x=1$
$4(1)+y=0$
$y=-4$

You might be interested in

yaroslaw [1]

10, 11, 12, and 13 :)

6 0

3 years ago

BlackZzzverrR [31]

Answer:

I dont understand there is no equation to solve or any math at all

4 0

4 years ago

ioda

Answer: please see the attachments for the solution.

Step-by-step explanation:

3 0

4 years ago

lilavasa [31]

4 x 5 = 20
4 x 7 = 28
20 + 28 = 48
48 is your answer
Hope this helps!

8 0

3 years ago

Annette [7]

The answer is 1.

3^3 = 27
27^-1 = 1/27
1/27 x 27 = 1

I took this test and got this question right.

7 0

3 years ago