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MA_775_DIABLO [31]
3 years ago
6

I put this into my calculator but it keeps coming out as "error" :/ not sure if it's just my calculator or something with the pr

oblem

Mathematics
1 answer:
Triss [41]3 years ago
8 0
Your calculator says error because you cant have a square root of a negative number because there is no solution to that maybe recheck your equation and try again
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Which of the following statistics would provide a good comparison between data sets?
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a certain number of two digit is three times the sum of its digit and if 45 added to it the digit will be reversed find the numb
bogdanovich [222]
· Author has 184 answers and 67.6K answer views
Let the number be (10 x + y)

Then, 10 x + y = 3 * (x + y) (given)

Or, 10 x + y = 3 x + 3 y

Or, 10 x - 3 x = 3 y - y

Or, 7x = 2 y

Or, x = 2 y / 7 ( Eq. 1)

Also, 10 x + y + 45 = 10 y + x ( given)

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Substituting the value of x from (Eq. 1) in (Eq. 2), we have:

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So, the number is 10 x + y = (10 * 2) + 7 = (20 + 7) = 27

Answer

Check:

Sum of the digits = 2 + 7 = 9

9 * 3 = 27 ✓

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