Let c be children tickets and a adult tickets
5c+3a=25
4c+4a=28
Multiply all of the top row by -4
Multiply all of the bottom row by 3
-20c-12a=-100
12c+12a=84
a's cancel so you have
-8c= -16
Divide by -8
C= $2
Children tickets = $2
Answer:
∣∣5∣∣+∣∣−7∣∣+∣∣9∣∣+∣∣−13∣∣
Step-by-step explanation:
A=2πrh+2πr2 Area of cylinder
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