Answer:
hey did you phrase the question wrong bc it says a turtle travels one mile in an hour then you are asking how far it travels in an hour
Step-by-step explanation:
<h2>As a decimal: 20.56667</h2><h2>As fractions:

OR

</h2>
Answer:
9-63x
Step-by-step explanation:
9(1-7x)
9-63x
Answer:
Given that:
and 
if a , a+ commutator, it obeys 
First find:

= 
Now;

=
therefore,
which implies the operators a and a+ are commutators.