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If a number is added to the numerator of 2/9 and the same number is subtracted from the denominator, the result is 10. Find the number.

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`x`²	`x`^□	log_□	√☐	^□√☐	≤	≥	□□	·	÷	`x`^◦	π
(☐)^′	`ddx`	∂∂`x`	∫	∫_□^□	lim	∑	∞	`θ`	(`f` ◦ `g`)	`f`(`x`)

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ddx

≥	≤	·	÷	`x`^◦	(☐)	\|☐\|	(`f` ◦ `g`)	`f`(`x`)	ln	`e`^☐
(☐)^′	∂∂`x`	∫_□^□	lim	∑	sin	cos	tan	cot	csc	sec

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bernoulli y^′+yx −√y=0, y(1)=0

Solution

y=x²9 −2√x9 +19x

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Média aritmética

A média aritmética é a soma dos valores do conjunto dividida pelo número de elementos deste conjunto.
Se o nosso conjunto de dados contém os valores a₁, … , a_n (n elementos) então a média=1n ∑_i=1ⁿa_i

Calcule a soma do conjunto de dados: ∑_i=1ⁿa_i=2.14

Calcule o número de termos no conjunto de dados: n=4

Divida a soma pelo número de termos e simplifique: 0.535

=0.535

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−▭▭	<	7	8	9	÷	`AC`
+▭▭	>	4	5	6	×	☐☐☐
×▭▭	(	1	2	3	−	`x`
▭ \|▭	)	.	0	=	+	`y`

If a number is added to the numerator of 2/9 and the same number is subtracted from the denominator, the result is 10. Find the number.

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