Logb a=2 and logb b=-3. find logb ab

- 1

Step-by-step explanation:

using the rule of logarithms

log x + log y ⇔ log(xy), hence

AB = A + B = 2 - 3 = - 1

step-by-step explanation:

the original amount doesn't ''re just looking for the time it takes for 1/2 of the substance to we have

(1/2) =)     take the ln   of both sides

ln (1/2)   = )   and we can write

ln(1/2) = ) lne     and lne   = 1     so we have

ln(1/2) = -.1092t     divide both sides by -.1092

t = ln(1/2)/-.1092 = about 6.347 days = about 6.3 days (rounded)