Question

Ex 17 18 va rog si daca vreti si celelalte 2 adc 19 20 va rog dau 13 puncte

Answer 1

17. Rotunjire la sute de mii:

123792=100000

534218=500000

693504=700000

209875=200000

811789=800000

18. MDX=1510

XC=90

CCCXXIX=329

MCCLX=1260

MMMXX=3020

MCDXII=1412

19.  19=XIX

147=CXLVII

950=CML

2016=MMXVI

3572=MMMDLXXII

20. Fie meri-a si peri-b.

a= $\frac{a+b}{2}$+4 (amplificare cu 2 si scapare de numitor)====>2a=a+b+8=>

=>a=b+8

b=12=>a=20

nr pomi=a+b=20+12=32

*Le-am facut pe toate,pana la urma*