Question

Решите номер 208 1 задания

Answer 1

Решение задания во вложении

Answer 2

$(frac{0.8:(frac{4}{5}*1.25)}{0.84-frac{1}{25}})^2+(frac{(1.08-frac{1}{25}):2frac{3}{5}:0.6}{(2frac{1}{25}-1frac{4}{5}):1frac{4}{5}+(2.6-2.6)*5frac{1}{25}})^2=\ =(frac{0.8:1}{0.84-0.04})^2+(frac{(1.08-0.04):2.6:0.6}{(2.04-1.8):1.8+0})^2=\ =(frac{0.8}{0.8})^2+(frac{0.4:0.6}{0.24:1.8})^2=\ =1^2+(frac{0.4}{0.6}:frac{0.24}{1.8})^2=\ =1+(frac{0.4}{0.6}*frac{1.8}{0.24})^2=\ =1+(frac{0.4}{0.6}*frac{3*0.6}{0.4*0.6})^2=\ =1+(frac{3}{0.6})^2=\ =1+5^2=\=1+25=26$

 

20% числа равно 26, значит всё число равно

$frac{26*100}{20}=130$

 

Ответ: 130