If a runner maintains a constant speed of 12 miles/hour, how long will it take to complete a half marathon on 13.1 miles?

157.2 milles in 13.1 hours

explanation:

if a runner runs 12mph

then that means every hour is 12 miles,

so if there is 13 miles(doing distributive property),

12mph x 13 miles = 156m

but you still have a .1 miles left for every 12 hours

12mph x 0.1 miles= 1.2 miles

finally you would have to add both final miles together.

156m + 1.2m= 157.2 miles in 13.1 hours

hope this ! : )

c

explanation:

stimulus is a change in the environment that causes an organism to react. the response is the reaction to the stimulus. some examples of stimuli for zebras are drought, to many predators, and bad feeding grounds such as dead grass or plants. zebras respond to stimuli just like all other living organisms