20 times .06. Then you add that to 20. Subtract the total of all the supplies needed from 21.20. That will equal your change. Then subtract 9.37 from 21.20. That will be the cost. <span />
Answer:
12.7
Step-by-step explanation:
there are 4 sides to a square just divide 50.8 by 4 and you get 12.7 assuming all the sides are the same length
5x+7y=105
There are four variants are possible
1. You sold 15 adult tickets
2. You sold 7 student tickets and 10 adult tickets
3. You sold 14 student tickets and 5 adult tickets
4. You sold 21 student tickets.