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3 years ago

The sum of two numbers is 52. One number is 3 times as large as the other. What are the numbers?

2 answers:

8 0

Let b>a

b+a=52

b=52-a, we are also told that the larger number, b, is 3 times the smaller a:

b=3a, since b=b we can say:

3a=52-a

4a=52

a=13, and since b=3a

b=39

So the numbers are 13 and 39

JulsSmile [24]3 years ago

3 0

Let x be the smaller number.
Then 3x is the larger number.
We also know that the smaller added to the larger is 52, or:
x + 3x = 52
4x =52
x = 13
Therefore the smaller is 13, the larger is 3(13)=39.

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Answer:

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Step-by-step explanation:

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4 years ago

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Answer:

The calculation in step 3 is wrong

Step-by-step explanation:

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35, 16, 23, 42, 19

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So, step 1 is correct.

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$\sigma_i = |x_i-\bar x|$

Since here the mean value is

$\bar x=27$

Then for each of the values in this dataset, we have:

$\sigma_{1}=|35-27|=8\\\sigma_{2}=|16-27|=11\\\sigma_{3}=|23-27|=4\\\sigma_{4}=|42-27|=15\\\sigma_{5}=|19-27|=8$

So calculations in step 2 are also correct.

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While the result reported by Dora is 9.5: therefore, this step is not correct.

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