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stira [4]
3 years ago
5

when you reverse the digits in a certain two digit number you increase its value by 9 find the sum of its digits is 17

Mathematics
1 answer:
melamori03 [73]3 years ago
3 0
The answer is 80.
80 flipped is 08, which is equal to 8, then 8+9=17
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Answer:

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Step-by-step explanation:

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Find the number of pens they need to sell to break even (when R = C).
Leya [2.2K]

Answer:

R=10x

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a)

Substitute R and C into the equation for P:

P=10x - (2x+7000)

Now substitute 1000 for x and solve for P which is the company's profit if they sell 1000 pens.

b)

Set R equal to C

R=C

Plug in R=10x and C=2x+7000

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Solve for x which will be the amount of pens required to be sold to break even.

Step-by-step explanation:

I had to think through.

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Answer:

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