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riadik2000 [5.3K]
2 years ago
10

Kate bought 6 CDs and 2 DVD for $56.

Mathematics
2 answers:
Dahasolnce [82]2 years ago
3 0

Answer:

Step-by-step explanation:

Let cd price x; dvd price y

 

3x+y=20

2x+2y= 22

 

from the first equation, y= 20-3x

substitute y in the second equation, 2x+2(20-3x)= 22,  simplify -4x= -18, x= 4.5 and y= 6

Therefore, cd: $4.50 and dvd: $6.50

qwelly [4]2 years ago
3 0

Answer:

Kate: 6x+2y=56

Jake: 3x+3y=48

Step-by-step explanation:

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i hope it will help you!

4 0
3 years ago
Will give brainlist if its right!
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