Answer:
Given that:
and 
if a , a+ commutator, it obeys 
First find:

= 
Now;

=
therefore,
which implies the operators a and a+ are commutators.
Answer:
1 cup = 8 fl oz
Step-by-step explanation:
1 cup = 8 fl oz
Answer:
D
Step-by-step explanation:
well the anser has to equal 9 if you solved the question correctly BUT the other questions have to equal 9 so the first one is like this
(3*2-2)+(5*2+5*-1)
= (6-2)+(5*2+5*-1)
= (4)+(5*2+5*-1)
= 4+(5*2+5*-1)
= 4+(10+5*-1)
= 4+(10+-5)
= 4+(10-5)
= 4+(5)
= 4+5
= 9
Now the answers A is not it because
8*2+5*-3
= 16+5*-3
= 16+-15
= 16-15
= 1
B isnt it because
8*2+5*-1
= 16+5*-1
= 16+-5
= 16-5
= 11
And C isnt it because
2*2+5*-3
= 4+5*-3
= 4+-15
= 4-15
= -11
So that leaves D and this is how it is correct
= 8*2+7*-1
= 16+7*-1
= 16+-7
= 16-7
= 9
Hope this helps! Sorry I took so long
2x+3+132=180
2x+135=180
subtract 135 from both sides
2x=45
divide both sides by 2
x=22.5
Answer:
C
Step-by-step explanation:
80 is less than 81, but more than 68.