Question

Calculati:

14,4:0,6-3 la patrat

2,5+3,4:7-6:0,2

20%din 60

 

Answer 1

a)$14,4:0,6-3 ^{2} = 144:6-9=24-9=15$
b)[tex]2,5+3,4:7-60:2=2,5+3,4:7-30=-27,5+3,4:7 => [/tex]
aducem la acelasi numitor => $\frac{-27,5*7+3,4}{7} = \frac{-189,1}{7}$
c)$\frac{20}{100} *60= \frac{1}{5} *60=12$