Rewrite in a simplest exponential form. show work.

(-4n^(2))*  (5n^(7)):-20n to the power of 9

(2x)^(3)*(5x^(4 ))^(2): 200x to the power of 11

v =

Step-by-step explanation:

Let the trains A and B meet each other after t hours after the departure of a train A.

Distance traveled by train A in t hours = Speed × time

                                                                      = 60 × t

Distance traveled by train B = v × t

Since, Distance between the cities A and B = 600 km

60t + vt = 600

vt = 600 - 60t

v =

Therefore, expression that the represents the relation between v and t will be,

v =