Mathematics: X2 + 2x - 3= 5 (x - 1)(x + 3) = 5 x-1= 5 or x + 3 = 5 x= 6 or x = 2 Describe the error

X2 + 2x - 3= 5 (x - 1)(x + 3) = 5 x-1= 5 or x + - id223513515312461143, najeezubair0666

Ответ:

jerseygirl6167

21.05.2022

well, in the election, the losing candidate received 10200 votes, and we know that's 30% of the whole votes cast, le's say the whole amount is "x" or namely 100%.

$\bf \begin{array}{ccll} amount&\%\\ \cline{1-2} 10200&30\\ x&100 \end{array}\implies \cfrac{10200}{x}=\cfrac{30}{100}\implies \cfrac{10200}{x}=\cfrac{3}{10} \\\\\\ 102000=3x\implies \cfrac{102000}{3}=x\implies 34000=x$

Dorian's 3060 is really 30% of 10200, however, the losing candidate received 30% of the total votes cast, and that is 10200, so Dorian mistakenly is using 30% of the 30% received by the losing candidate as point of reference for her total.

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X2 + 2x - 3= 5 (x - 1)(x + 3) = 5
x-1= 5 or x + 3 = 5
x= 6 or x = 2
Describe the error

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