Ik that no one would like to help me with this but my friend is not feeling well today. hes out with a cold today so can yall make sure to sub to his YT, 999 splxsh tysm

aww yeah sure!

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)

i belive those are the ones that are under 90 degreese.