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Alex_Xolod [135]
2 years ago
13

Help, please..................................

Mathematics
2 answers:
laiz [17]2 years ago
6 0

Answer:

76.16

Step-by-step explanation:

x/112 = 32/100 cross multiply 100x = 3584 divided 3584 by 100 and get 35.84 now subtract 35.84 by original 122 and get 76.16

Ilya [14]2 years ago
3 0

Answer:

If you're asking about the last one, your answer is correct.

Step-by-step explanation:

Table in order:

64

35.7

24

76.16

Hope these were helpful!

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Prove: If n is a positiveinteger and n2 is<br> divisible by 3, then n is divisible by3.
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Answer:

If n^2 is divisible by 3, the n is also divisible by 3.

Step-by-step explanation:

We will prove this with the help of contrapositive that is we prove that if n is not divisible by 3, then, n^2 is not divisible by 3.

Let n not be divisible by 3. Then \frac{n}{3} can be written in the form of fraction \frac{x}{y}, where x and y are co-prime to each other or in other words the fraction is in lowest form.

Now, squaring

\frac{n^2}{9} = \frac{x^2}{y^2}

Thus,

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It can be clearly seen that the fraction \frac{3x^2}{y^2} is in lowest form.

Hence, n^2 is not divisible by 3.

Thus, by contrapositivity if n^2 is divisible by 3, the n is also divisible by 3.

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