Question

Imi trebuie tot ce am trimis!!!


Va rog măcar doua!!

Answer 1

Explicație pas cu pas:

1. a) 3,524-2,19=1,334;

b)4,25·10=42,5;

c)52:0,1=520;

d)0,2³=0,008.

2. a) (0,2+0,8·0,1):0,001=0,28:0,001=280;

b) (0,4+3/5):0,5=(2/5+3/5):2/5=5/5:2/5=5/5·5/2=25/2.

3. 3,25·1,5=4,875;

6,12:1,5=4,08;

45:1,5=30;

5,05·1,5=7.575.

4. a) (2,3+5,8)/2=8,1/2=4,05;

b) (a+a+1+a+2+a+3+a+4)/5=12

(5a+10)/5=12

5a+10=60

5a=50

a=10;

a+1=11;

a+2=12;

a+3=13;

a+4=14.

Succes!