Question

PLS ajutorrr!
Dau 20 de pcte si coronitaa!
Ajutati-ma si pe mine va rog cu:
Ex.8c),9c),10 a) si b) si 11!

Answer 1

8 c)   $\frac{2,4}{x} = \frac{4}{1,6} \\ x= \frac{2,4*1,6}{4} = \frac{3,84}{4} =0,96$
10 a)
$\frac{25}{75} = \frac{3}{x} \\ x= \frac{3*75}{25} = \frac{225}{25} =9$
$\frac{25}{180} = \frac{3}{x} \\ x= \frac{180*3}{25} = \frac{540}{25} =21,6$
$\frac{25}{0,5} = \frac{3}{x} \\ x= \frac{3*0,5}{25} = \frac{1,5}{25}= 0,06$
b)
$\frac{25}{x} = \frac{3}{4,5} \\ x= \frac{25*4,5}{3} = \frac{112,5}{3}=34,5$
$\frac{25}{x} = \frac{3}{0,6} \\ x= \frac{25*0,6}{3} = \frac{15}{3} =5$
$\frac{25}{x} = \frac{3}{0,5} \\ x= \frac{25*0,5}{3} = \frac{12,5}{3} =4,2$
11)
$\frac{5}{150} = \frac{30}{x} \\ x= \frac{150*30}{5} = \frac{4500}{5} =900$