Take the second equation and flip it around so the y on the left ends up on the right and the 4x on the right ends up on the left. This makes all negatives positive and all positives negative. -4x + 12 = y
Then add the first equation to the second equation
4x +12 = -7y
<u>-4x + 12 </u>=<u> y </u> this eliminates the x's
<u>24</u> = -<u> 6y</u> then divide by - 6
- 6 - 6
- 4 = y<u>
</u>So if you know that y = negative 4, you can substitute into either equation. I pick the second one because I am a lazy person.
-y + 12 = 4 x
-(-4) + 12 = 4 x combine your numbers<u>
</u> <u> 16 </u> = <u>4 x </u> then divide by 4<u>
</u> 4 = x
So your solution is: x = 4 and y = -4 or this is also written (4, -4)
Does that work for you?
Answer:
158 square feet
Step-by-step explanation:
2(lb+bh+lh)
2(40+24+15)
80+ 48+30
158
It all depends on the car . what are the answers ?
Answer:
73 - 2x = 86 - 3x
So 3x - 2x =86 - 73 so x=13
Step-by-step explanation:
Then m<1 = 73-2(13) = 47
M<2=82-3(13)=47
So both angles are having same value
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