Answer:
− 5 a + 45
Step-by-step explanation:
can i have brainliest?
Answer:
20
Step-by-step explanation:
lol
This isn’t a math equation
Answer:
The velocity is 8.93 meters/second.
Step-by-step explanation:
It is given that Elena runs for 28 seconds and finishes at 250 meters.
Here the displacement is 250 meters and the time is 28 seconds.
We know that 
Substitute displacement = 250 and time = 28 in above formula.

meters/second
Hence, the velocity is 8.93 meters/second.
Answer: =(x - 1) x (x^2 + x + 1)