Question

Dacă a/b = 4/5, atunci calculează valorile următoarelor rapoarte:
a) b/a ;
b) 5a/b ;
c)7b/3a ;
d)b-a/ b+a ;
e) 20+b/50-b;
f) a la puterea a 2 + b la puterea a 2/b la puterea a 2+2ab

DAU COROANA !!!!!!

Answer 1

uite aici pwp sper ca e bn

Answer 2

Răspuns:

a=4b/5 ; b=5a/4

a)b/a=5/4

b)5a/b=20/5=4

c)7b/3a=7b•5/12b=35/12

d)(b-a)/(b+a) = (b - 4b/5) : (b + 4b/5) = 1/5

e)(20+b)/(50-b) = (20 + 5a/4)/(50 - 5a/4) = ???

f)(16b^2/25 + b^2) : (b^2 + 8b/5 • b) =

41b^2/25 • 5/13b^2 = 41/65