Question

dados log 2= 0,30 e log 7 =0,85 determine:

log 14=
log 700=
log 3,5=
log 280=

sos(com calculo por favoor)

Answer 1

log 14=

log(2*7)= log2+log7= 0,30+085 =1,15

log 700=

log(100*7)=log100+log7=2+0,85=2,85

log 3,5=

log(7/2)=log7-log2= 0,85-0,30= 0,55

log 280=

log(2².7.10)=2log2+log7+log10=

2(0,30)+0,85+1 = 0,60+0,85+1= 2,45