jim began a 183 mile bicycle trip to build up stamina for a triathlete competition. unfortunately his bicycle chain broke so he finished walking. the whole trip took 7 hours. if jim walks at a rate of 3 mph and rides at 39 mph, find the amount of time he spent on the bike

distance = speed * time

let 'x' represent the amount of hours Jim rode the bike, then '8-x' represents the number of hours he walked

183 = 31x+5(8-x)

Step-by-step explanation:x=5.5

8-5.5=2.5

Jim rode the bike for 5.5 hours and then walked for 2.5 hours.

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)

e

step-by-step explanation:

an equation by definition has to have two or more variables (x and 2 in this case)