Question

repede e urgent dau coroana de la saptepână la 11​

Answer 1

7= 135 min

8= 29

9 a=1

B=3

C=4

D=2

10 4+4+8+8=24

11=

Answer 2

Explicație pas cu pas:

Ex. 11

a)2*l=L

P=2×(l+L)=2×(l+2l)=6l=300m=> l=50 si L=100

b) l=50m×2,5=55 m

L=100+5=105m

P=2×(55+105)=2×160=320m

c) A=2×2,5×105+2×2,5×50=5×(105+50)=5*155=775 m^2

Ex.10

a) l=4cm

L=4×2

L=8

P=(2×4)+(2×8)

P=8+16

P=24cm

b)

P=36cm

L=3×l

36=2×2l+2×3l

36=10l

l=36:10

l=3,6cm

L=3×3,6

L=10,8cm

Ex.9

a)1,2^2=1,44

b)0,2^3=0,008

c)0,144×10^2=2,4

d) 0,2:0,25=0,8

Ex.8

4,6+(12,2×2)=4,6+24,4=29 b)29