Multiply the equation 2x+7y=-1 by -2
add to othe equaiton
4x-3y=-19
<u>-4x-14y=2 +</u>
0x-17y=-17
-17y=-17
divide both sides by -17
y=1
sub back
2x+7y=-1
2x+7(1)=-1
2x+7=-1
minus 7 from both sides
2x=-8
divide both sides by 2
x=-4
x=-4
y=1
(x,y) is normal form
(-4,1) is answer
Answer:
The value of 2008 is 112% of the Value of 2007.
But we need 100% of the year of 2007.
So 350000/112=3125=>1%
3125*100=312500=>100%
The answer is $312500
Answer: C
Step-by-step explanation:
1x+1x+2x=180
4x=180
x=45
45:45:90
Hope this helps!
