Question

Raportul dintre avsi b este 2 sulra 3si raportul dintre b si c esye 4 supra 9.aflati raportul dintre : a)2a si 3b, b)a+b si 2b,c)a di c,d)dintreb la puterea 2 si 2c la puterea 2

Answer 1

a/b = 2/3 si b/c = 4/9

a) 2a/3b = 2/3 * a/b = 2/3 * 2/3 = 4/9
b) (a+b)/2b = a/2b + b/2b = 1/2 * a/b + 1/2 = 1/2*2/3 + 1/2 = 1/3+1/2 = 2/6+3/6 = 5/6
c) a/c = a/b * b/c = 2/3 * 4/9 = 8/27
d) b^2/2c^2 = 1/2 * (b/c)^2 = 1/2 * (4/9)^2 = 1/2 * 16/81 = 8/81