Log3 4-4log3 2 + log3 4/9 + log3 1 = log3 (4/2^4) + log3 4/9 + log3 1 = log3 (4/16) + log3 4/9 + log3 1 = log3 (4/16 * 4/9) + log3 1 = log3 (1/9) + log3 1 = log3 1/9*1 = log3 (1/3)^2 = log3 3^-2 = -2
(1/3 + 1/2) * х = 3,75
(2/6 + 3/6) * х = 3,75
5/6х = 3,75
х = 3,75 : 5/6
х = 375/100 * 6/5
х = 75/50 * 3/1
х = 225/50
х = 4,5
Выберите дроби, которые можно представить в виде десятичных: 1/2, 1/4, 1/5, 1/6, 1/8, 1/9, 1/10, 1/12, 1/14, 1/15, 1/16.
Durbek [10]
1/2=0,5
1/4=0,25
1/5=0,2
1/8=0,125
1/10=0,1
1/16=0,0625
А) 4910,4947,4984 б)25800, 25810