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3 years ago

The sum of two numbers is 12. The difference of the same two numbers is −4. Find the two numbers.

Mathematics

2 answers:

Amanda [17]3 years ago

8 0

Answer: x = 4, y = 8

Step-by-step explanation:

Let the two numbers be x and y

sum of the two numbers will be

x + y = 12 ------------------------------1

Difference of the two numbers

x - y = -4 ----------------------------- 2

Now, to find the two numbers , we solve equation 1 & 2 together

x + y = 12

x - y = -4

we now add the two equations to eliminate y

2x = 8

x = 4. Now to find the value of y, we substitute for x in any of the equation above

x + y = 12

4 + y = 12

y = 12 - 4

y = 8

Butoxors [25]3 years ago

7 0

Answer:

4 and 8

Step-by-step explanation:

Let 'a' represent one of the numbers. Then the other is 12-a, and their difference is ...

a - (12-a) = -4

2a = 8 . . . . add 12

a = 4 . . . . . divide by 2

12-a = 8 . . . . find the other number

The two numbers are 4 and 8.

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B is the correct answer. How to test it:

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Bas_tet [7]

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vovikov84 [41]

Answer:

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Step-by-step explanation:

1)use FOIL

F=first

O=out

I=inside

L=last

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25a^2-35a+35a-49

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Hope this helps!

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3 years ago

Read 2 more answers

A company that makes nails finds that it would sell 42 boxes of nails per month if they are priced at $20 per box. If the compan

denpristay [2]

The answer is D.

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Checking:
If y = 20 and x = 42,
20 = 62 - 42
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If y = 10 and x = 52.
10 = 62 - 52
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Thank you for posting your question. I hope you found you were after. Please feel free to ask me another.

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3 years ago