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Yuliya22 [10]
3 years ago
11

The sum of x and y is eleven, their difference is five, what is the value of x and y?

Mathematics
1 answer:
REY [17]3 years ago
5 0

Answer:

x = 8

y = 3

Step-by-step explanation:

x + y = 11

x - y = 5                     Subtract

2x = 16

x = 16/2

x = 8

x + y = 11                   Substitute x = 8

8 + y = 11                  Subtract 8 from both sides

8-8+y =11-8

y = 3    

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You want the total cost for n CDs to be 3.50n.

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3 years ago
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Answer:

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profit margin for one concert = total profit margin for all 12 concert/total no of concert  = $6,400/12 = $533.33

profit margin for all one concert is  $533.33

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