Question

Ex 6,7,8si9 URGENT!!!! Dau coronita si 9p

Answer 1

6) a) x=4  p=(4+1)(2ori 4 +11)(3ori 4-7)=5 ori 19 ori 5 = 475

   b)y=9  p=(9+5)(2 ori 9 -4 )( 3 ori 9 +3)= 14 ori 14 ori 15=2940

Answer 2

6a) x=4

p=(4+1)*(2*4+11)*(3*4-7)

p= 5*19*5=95*5=495

6b) y=9

p=(9+5)*(2*9-4)*(3*9+3)=14*14*30=196*30=5880

7)In prima zi 19 km

In ziua 2:     19*4=76 km

In ziua 3:     76+19=95km

La finalul celei de-a 3-a zi a ajuns la:     95-11=84 km

In ziua a 4-a parcurg 84*5=420 km

In total parcurge 84+420=504 km

8) 12 lei penar gol

9p=9*5=45 lei

5c=5*3=15 lei

2r=2*2=4 lei

1a= 7 lei

Total:   12+45+15+4+7=83 lei

9) 9<x<17

11<y<22

x poate fi: 10,11,12,13,14,15,16 iar y poate fi 12,13,14,15,16,17,18,19,20,21

minim x*y=10*12=120

maxim x*y=16*21=336