Answer:
One solution
Step-by-step explanation:
x+y=5
3x-y=-5
Add the equations together will get you:
4x=0
Divide the 0 by 4 to get the x alone will get you
x=0
Answer:2.21
Step-by-step explanation:I used a calculator
You can solve this by cross multiplying and dividing. If you set 104/125 = x/100. 104 * 100= 10400 and you divide that by 125 and get 83.2, so the answer is 83.2% of the guests invited showed up.
(for x=0) 3 & (for x=4) 19