Friends i need your help pleasee

1. Average velocity in first three seconds:

V = (d3 - d0)/(t3 - t0) = 8/3 = 2.67 (m/s)

2. Displacement from initial position at the end of 13 s: D = -8 (m)

( because from t = 12 to t = 15, displacement is constant and equal to -8)

3. Time after which the body is at the initial position:

t = 8 and t = 17 (according to the graph, at these moments, D = 0)

4. Average velocity after 8 s:

V = (d8 - d0)/(t8 - t0) = 0/8 = 0 (m/s)

Hope this helps!

:)

since your problem is x^4 = 81, what you have to undeo is the "to the fourth power" part.

the inverse (opposite operation) of "to the fourth power" is "to the fourth root".

  (x^4) ^ ¼   = 81 ^ ¼  

  81 = 3^4     so (3 ^ 4) ^ ¼   =   3 ^ 1   = 3

by hand: (3 ^ 4) ^ ¼   =   3 ^ (4 x ¼) = 3 ^ 1   = 3   (when you take a power to a power, multiply the exponents.)

or, do it by calculator. one way of finding the fourth root is to use ^ (1/4)

step-by-step explanation:

f is the midpoint of