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3 years ago

15

i thought of a number. if i subtract 6 from it and multiply the difference by 4 the result is 36. find the number that i thought

of

1 answer:

SVEN [57.7K]3 years ago

3 0

Since the difference*4=36, the difference = 9
since the number-6= the difference, the number-6=9
Thus the number is 15

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Sindrei [870]

Answer: One plain roll is 4 dollars and one shiny roll is 6 dollars.

Step-by-step explanation:

lets start by saying

rolls of plain wrapping paper = x

rolls of shiny wrapping paper = y

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Both equations will look like this.

4x+3y=34

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we can multiply the second equation by -1 to get y alone. (doesn't matter which equation). Once you do that, the positive 4x and the negative 4x cancel out, 3y-2y=1y and 34-28=6. you are left with

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now use that price to find the cost of the plain roll.

lets use Kathryn's equation

4x + 3(6)=34

4x + 18= 34

-18 -18

4x=16. Divide by 4 to find cost of one plain roll.

16÷4=4. One plain roll costs 4 dollars.

Lets check. Using Kathryn's equation,

4(4) + 3(6)=34

16+18=34

34=34. We are right.

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3 years ago

80 items were sold, bringing in $6,900 in receipts. Some items were sold at a discount for $75 each and some others were sold at

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Answer:

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3 years ago

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Vaselesa [24]

Answer:

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3 years ago