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irakobra [83]
3 years ago
9

You purchase a DVD and two books. The cost of the DVD is 12.50. Your total bill before tax is 48.50. Write and slove an equation

to find the cost of each book. Let n+ cost of book
Mathematics
1 answer:
Phoenix [80]3 years ago
7 0

Answer:

The cost of each book is $18.

Step-by-step explanation:

1. 12.50+2n=48.50

2, 12.50-12.50=cancels out

3. 48.50-12.50=36

4. 2n=36

5. 2n/2=n

6. 36/2=18

7. n=18

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Answer:

= 1/7 or 0.(142857) in decimal

Step-by-step explanation:

(4/7) - (3/7)

= 1/7

3 0
3 years ago
David took his family out for dinner. He planned to leave a 20% gratuity on the bill. What is the total cost if the bill was $12
denis23 [38]
Let’s find 1% of 125 first.
125 x 0.01 = $1.25
1.25 x 20 = $25 gratuity.

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$125 + $20 = $145

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Hope that helped! :)
4 0
3 years ago
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Will give you BRAINLEST
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Answer:

Both boxes have the same amount of work applied to them. The smaller box will get to the end first.

Step-by-step explanation:

For the 400 kg box, we can say,

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force = mass*acceleration

1 = 400*acceleration

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Each second, the larger box's velocity is increasing by 0.0025 meters per second.

While the smaller box would have an acceleration of...

force = 1 newton

force = mass*acceleration

1 = 200*acceleration

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Put simply: if the force applied is the same for the two boxes, then the smaller box will have larger acceleration. This is because more force is needed to push on the larger mass.

Because the smaller box has more acceleration, it will naturally travel faster compared to the larger box. Therefore, the smaller box reaches the goal line faster.

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Find the inverse of the equation y=x2+3
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Answer:A

Step-by-step explanation:

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