Question

27,28 si 29...daca nu stiti toate exercitiile,faceti ce stiti...rapiddddd​

Answer 1

Răspuns:

a)

x=1 ;2;4; 6; 8.

y=4;2;1;2/3;1/2

b)(1;4);(6;2/3);(8;1/2)

28.a/4=b/5=c/7=k

(a+b+c)/(4+5+7)=k

48/16=3=k

(a+b+c)/3=16

a+b+c=48

a=4×3=12. b=5×3=15. c=7×3=21

29.x/2= y /5=z/7=k

x×y×z=560

2×5×7×k^3=560 560/70=8

k^3=2^3. k=2

x =4 y =10 z=14