Julian biked a 24 km trip to guelph. on his way there, his average speed was 12km/h. on his way home, he stopped for a break, so his average speed was only 8km/h. what was his average speed, in km. h, for the entire round trip?

Time taken by Julian to complete 24 km trip to Guelph at 12 km/h =

hours

Time taken by Julian for return trip at 8 km/h = hours

As given, the total distance is 24 + 24 = 48 km.

And the total time is 2 + 3 = 5 hrs.

Hence, the average speed for the entire trip is =

The answer is 9.6 km/hour.

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)

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation: