Atypical marathon is 26.2 miles. allan averages 12 kilometers per 1 hour when running in marathons. how long does it take for allan to complete a marathon, to the nearest tenth of an hour.

3.5 hours

Step-by-step explanation:

Given: Distance= 26.2 miles

           Speed= 12 km/h

First lets convert the unit of speed from kmh to mph.

Remember, 1 mile= 1.609 km

∴ For speed of 12 km/h=

Speed= 7.45 mph

Next, find time taken by Allan to complete a Marathon.

⇒ Time=

∴ Time= 3.516 hours ≅ 3.5 h (nearest tenth)

∴ Allan took 3.5 hours to complete marathon.

the balance is found at the link

step-by-step explanation:

f(x) = - 2/3x + 5; f(5/2)

substitute 5/2 in for x:

f(5/2) = -2/3(5/2) + 5

simplify the right side:

f(5/2) = -5/3 + 5

f(5/2) = 10/3

answer:

f(5/2) = 10/3

i hope this you!