On an algebra test, there are 7 students with as, 9 students with bs, 11 students with cs, 3 students with ds, and 2 students with fs. find the probability that a randomly chosen student has d. round to the nearest tenth of a percent.

idk lol

step-by-step explanation:

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)