3. If log (x + y) = log x + log y and x = 1.15683,
then y has the value :
A. 7.736
B. 7.376
C. 3.456
D. 1.234
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Answer:
log(x+y)=logx+logy
log(x+y)=log(xy)
x+y=xy
1.15683+y=1.15683y
1.15683=1.15683y-y
1.15683=0.15683y
y=1.15683/0.15683
y=7.3763310591085
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