(3a) You spend $72 on tapes and CDs. Each tape costs $8 and each CD costs $12.
1 answer:
Answer:
3a. 8t + 12c = 72
3b. t + c = 7
Step-by-step explanation:
number of tapes is t
number of Cds is c
so 8t + 12c = 72
and t + c = 7
so t = 7 - c
replace t = 7 - c in to the first equation
8(7 - c) + 12c = 72
56 - 8c + 12c = 72
4c = 72 - 56 = 16
c = 4
if c = 4, then t = 7 - c = 7 - 4 = 3
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Answer:
No
Step-by-step explanation:
Plug in (-2, -6) to see if it's the solution or not
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-114 ≠ -14
Answer is NO
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Step-by-step explanation:
Answer:
x = 6 y = 5
Step-by-step explanation:
<u><em>X VALUE</em></u>
3x+11 = 5x-1
12 = 2x
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<em><u>Y VALUE</u></em>
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D and E is the answer. C is exactly 108 and not greater than