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3 years ago

The sum of two numbers is 50 and the difference is 12. What are the numbers?

Mathematics

2 answers:

Debora [2.8K]3 years ago

6 0

Answer: x=31 and y = 19

Step-by-step explanation:

X+y=50

X-y=12

2x + 0y = 62

Divide both sides by 2

2x/2 = 62/2

x = 31

Now find y by plugging in 31 for x

31+y = 50

Subtract 31

y = 50-31

y = 19

Strike441 [17]3 years ago

3 0

Answer:

The two numbers are 31 and 19

Step-by-step explanation:

Let x and y be the numbers

x+y = 50

x-y = 12

Add the two equations together

x+y = 50

x-y = 12

-----------------

2x +0y = 62

Divide by 2

2x/2 = 62/2

x = 31

Now find y

31+y = 50

Subtract 31

y = 50-31

y = 19

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Answer:

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Step-by-step explanation:

Step(i):-

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The proportion (p) = 0.75

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Step(ii):-

The Marginal error is determined by

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squaring on both sides , we get

n = 117.07

Final answer:-

The large sample n = 117.07

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3 years ago

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mart [117]

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