Write a number that has four digits with the same number in all places, such as 4,444. circle the digits with the greatest value. underline the digit with the least value. explain

9999

first 3 nines have the greater value but the first one has the highest and the least one is the last nine.

d

step-by-step explanation:

d

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)