" Life is not a problem to be solved but a reality to be experienced! "
© Copyright 2013 - 2024 KUDO.TIPS - All rights reserved.
Verified answer
29.]R = log (A / P)
R =log (100000/0,001)
R = log 100000000
R = 8 Skala Richter
[D]
30.]
³log (x + 3) + ³log (x - 5) < 2
³log (x + 3)(x - 5) < ³log 9
(x + 3)(x - 5) < 9
x² - 2x - 15 < 9
x² - 2x - 24 < 0
(x - 6)(x + 4) < 0
-4 < x < 6 ... (i)
Syarat :
x - 5 > 0
x > 5 ... (ii)
Irisan dari (i) dan (ii) adalah HP-nya
HP : {x | 5 < x < 6 , x ∈ R}
[B]