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Feliz [49]
3 years ago
7

The sum of a number and its opposite equals zero

Mathematics
1 answer:
Andru [333]3 years ago
6 0

Answer:

Yes,its true

Step-by-step explanation:

<h2>__________________</h2><h2>Consider, a number x</h2>

<h2>as per question</h2>

<h2>x+(-x) =x-x=0</h2><h2>__________________</h2>
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Answer:

2/3(3x+9)=-2(2x+6)

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4 0
3 years ago
If average of m numbers is n^2 and average of n numbers is m^2 then average of m+n numbers is 
kkurt [141]
The sum of the m numbers divided by m (which is the average) equals n^2. Then, the sum of the m numbers equals mn^2.
The sum of the n numbers divided by n (which is the average) equals m^2. Then, the sum of the n numbers equals nm^2.
The average of m+n numbers which is the sum of the m numbers plus the sum of the n numbers divided by (m+n) equals (mn^2+nm^2)/(m+n). This is mn(n+m)/(m+n). Then the factor (m+n) can be ruled out and the result is mn.
4 0
3 years ago
Find the GCF of <img src="https://tex.z-dn.net/?f=18x%5E%7B3%7D" id="TexFormula1" title="18x^{3}" alt="18x^{3}" align="absmiddle
melamori03 [73]

18x^3 = 6x^3 *  1

30x^5 = 6x^3 * 5x^2


So GCF = 6x^3


Answer

6x^3

8 0
3 years ago
Read 2 more answers
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Answer:

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Step-by-step explanation:

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