Runners race around a rectangular park during the city marathon. the length of the park is 6 miles. the width of the park is 7 miles. which is the correct unit of measurement to use when figuring out how many miles someone would run during the marathon? a. miles3 b. miles c. miles2

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)

answer: -8.2562234e+13