An athlete runs a distance of 345 metres (to the nearest metre) in a time of 44.6 seconds (to the nearest 0.1 second).
What is her slowest possible speed?

7.716 (with margin: 0.001)

Step-by-step explanation:

speed = distance ÷ time

For speed to be at a minimim you need distancemin ÷ timemax

Min distance = 345 - 0.5 = 344.5m

Max Time = 44.6 + 0.05 = 44.65 sec

speedmin=344.5 ÷ 44.65 = 7.7155 = 7.716 m/s (3 dp)

f(2x−x2)=−3x2+6x−1

step-by-step explanation:

set up the composite function and evaluate.

f(2x−x2)=−3x2+6x−1

step- i d k and i d c : )

you: : 0

bye