Answer:
Given that:
and 
if a , a+ commutator, it obeys 
First find:
= 
Now;
=
therefore, which implies the operators a and a+ are commutators.
Answer:
e) 1 / 2
f) -3 / 2
Step-by-step explanation:
e) line passing through points (1,1) (3,2)
you can count coordinates by blocks
slope = (y2 - y1 ) / (x2 - x1)
= (2 - 1) / (3 -1 )
= 1 / 2
f) line passing through points (0,0) (-2,3)
slope = (y2 - y1 ) / (x2 - x1)
= (3 - 0) / (-2 - 0)
= 3 / -2
= -3 / 2
I believe it's the second answer, where "the test contains 10 3-point questions and 14 5-point questions."
This is a linear relationship as the rate of change is constant, ie constant velocity. And the slope represents the velocity, and slope is:
m=(y2-y1)/(x2-x1)
m=(50-25)/(2-1)=25/1
m=25
So the rate of change is 25 mph
