0.48=48/100=12/25~~~12/25>11/25 True✔ ~~~~Have a nice day!!! ★★
Answer:
A book is worth $1 and a DVD is worth $12.
Step-by-step explanation:
The equations (2 unknowns and two equations, d is for a DVD and b is for a book):
For David: 3d+4b=40
For Anna: d+6b=18
Now multiply the second equation with -3 and add to the first equation:
3d+4b=40
−3d−18b=−54
Combined equation: −14b=−14 and b=1 (means that each book is worth $1).
Now for DVD price, use the second equation:
d=18−6 or d=12 (means that each DVD is worth $12).
A book is worth $1 and a DVD is worth $12.
Answer is A. 10 Hope this helped
THE ANSWER IS THE COMMON DIFFERENCE IS -7.2 (first answer)
PLEASE MARK BRAINLIEST :)
Answer:
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Step-by-step explanation:
