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deff fn [24]
3 years ago
6

What is the difference 14/15 - 5/12 written as a decimal?

Mathematics
2 answers:
ioda3 years ago
6 0
14/15 - 5/12
= (168-73)/ (15*12)
= 93/180
= 31/60
= 0.5166666667
stiv31 [10]3 years ago
5 0
14/15 - 5/12 

Common denominator is 60.

\frac{4 * 14}{4 * 15} -  \frac{5 * 5}{5 * 12}

56/60 - 25/60

= 31/60 as fraction.
= 0.516 as decimal.

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Use a proof by contradiction to show that the square root of 3 is national You may use the following fact: For any integer kirke
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1. Let us proof that √3 is an irrational number, using <em>reductio ad absurdum</em>. Assume that \sqrt{3}=\frac{m}{n} where  m and n are non negative integers, and the fraction \frac{m}{n} is irreducible, i.e., the numbers m and n have no common factors.

Now, squaring the equality at the beginning we get that

3=\frac{m^2}{n^2} (1)

which is equivalent to 3n^2=m^2. From this we can deduce that 3 divides the number m^2, and necessarily 3 must divide m. Thus, m=3p, where p is a non negative integer.

Substituting m=3p into (1), we get

3= \frac{9p^2}{n^2}

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