Question

9 срочно!!!!!! Пожалуйста 50 балов

Answer 1

$\frac{5+0,8x}{x^{2}+5x }+\frac{1}{5x+25}= \frac{5+0,8x}{x(x+5)}+\frac{1}{5(x+5)}=\frac{5(5+0,8x)+x}{5x(x+5)}=\frac{25+4x+x}{5x(x+5)}=\frac{25+5x}{5x(x+5)}=\\\\=\frac{5(5+x)}{5x(x+5)}=\frac{1}{x}\\\\x=0,01\\\\\frac{1}{x}=\frac{1}{0,01}=\frac{1}{\frac{1}{100}}=100\\\\Otvet:\boxed{100}$