решите пж дам много балов. Created by daniel4678. algebra-ru

решите пж дам много балов...

daniel4678 @daniel4678

October 2021 1 5 Report

решите пж дам много балов

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$1)\; \; 0,44=\frac{44}{100}=\frac{99}{225}\; ;\; \; 0,8=\frac{8}{10}=\frac{4}{5}=\frac{180}{225}\; ;\\\\\frac{2}{5}=\frac{90}{225}\; ;\; \; \frac{4}{9}=\frac{100}{225}\\\\\frac{180}{225}>\frac{100}{225}>\frac{99}{225}>\frac{90}{225}\; \; \Rightarrow \; \; min=\frac{90}{225}=\frac{2}{5}=0,4\\\\Otvet:\; \#3.\\\\2)\; \; \frac{1}{16}-\frac{1}{15}\; ;\; \; -\frac{1}{15}$

$4)\; \; \frac{2,37}{1,15\cdot 0,18}=2,37:(1,15\cdot 0,18)=(2,37:1,15):0,18\\\\Otvet:\; \; \#1\; ,\; \#4\; .\\\\5)\; \; a=-2\; ,\; x=-0,2\\\\\frac{(a+x)(a-x)}{ax}=\frac{a^2-x^2}{ax}=\frac{(-2)^2-(-0,2)^2}{2\cdot 0,2}=\frac{4-0,04}{0,4}=\frac{3,96}{0,4}=\frac{396}{40}=9,9\\\\6)\; \; a\approx -0,4\\\\a)\; \; \frac{1}{a}=\frac{1}{-0,4}=-\frac{10}{4}=-2,51\; \; verno$

$c)\; \; \frac{1}{a}=-\frac{10}{4}=-\frac{5}{2}=-2,5$

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