Question

Ajutor dau coroana!!!!!!

Answer 1

Răspuns:

S1.1. 1011

2.a=9

3.Media este 9.

4.Rotunjirea la sute este 2800

6. 4,175m²

S2.1. =25-3(37-5•15:25):17=

=25-3(37-75:25):17=

=25-3(37-3):17=

=25-3•34:17=

=25-102:17=

=25-6=

=19

2. (6x-21+11):2=1+9

(6x-10):2=10

6x-10=10•2

6x-10=20

6x=20+10

6x=30

x=30:6

x=5

4.Folosim formula de calcul prescurtat :(a+b)³=a³+3a²b+3ab²+b³ =>x=(a+b)³ =>x=y

a)x=(5+3)³=8³=512 =>y=512

b)x-y=0,deoarece x=y