Question

calcule as expressões: (4-4/5) : (9+1/3) (B) 12+[35- (10+2) + 2] (C) (0,6)2 + (0,8)2 (D) √81 + √16 + √0,25

Answer 1

Explicação passo-a-passo:

a)

(4-4/5)÷(9+1/3)=(20/5-4/5)÷(27/3+1/3)=16/5÷18/3=16/5×3/18=48/90=24/45

b)

12+(35-(10+2)+2)=12+(35-12+2)=12+25=37

c)

(0,6)2+(0,8)2=1,2+1,6=2,8

d)

9+4+0,5=10,5