Question

Vă rog ajutațimă repede cine răspunde primul corect îi dau coroană​

Answer 1

Răspuns:

a) (2/3)^n=16/81=(2/3)⁴

n=4

c)(1si1/2)^n=3si375/1000

(3/2)^n=3375/1000=3375:5/1000:5=

675:5/200:5=135:5/40:5=27/8=(3/2)³

n=3

b)(1/7)^n=1/343=(1/7)³

n=3

d)(2si1/2)^n=125/8

(5/2)^n=(5/2)³

n=3

e) (1/9)^n=1/729=(1/9)³

n=3

f)(1/8)^n=(1/4)³

[(1/2)³]^n=(1/2)⁶

3n=6

n=2