A runner runs a distance of 500 metres in a time of 50 seconds. what is his average speed?

average speed = 10 m/s

Explanation:

          average speed = distance ÷ time taken

Here the distance is 500 m and time taken is 50 seconds

using the formula:

average speed =  500 ÷ 50

average speed = 10 m/s

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step-by-step explanation:

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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!