X >7. I hope this helps, happy learning.
Answer:
It is Commutative
Step-by-step explanation:
An operation ∆ is said to be Commutative if a∆b=b∆a ∀ a,b ∈ ℝ.
Given the operation ∆ defined by:
a∆b=a X b

a∆b=
=3
Similarly, for the right hand side.

Therefore:
b∆a=
=3
These are the two ways of solving this problem and we have in fact shown that the operation is commutative as:
a∆b=b∆a=3
Answer: 5th degree trinomial
The degree is 5 because its the largest exponent of the single variable polynomial.
It's a trinomial because there are 3 terms. The terms are separated by a plus or a minus.
Answer: 37 fruit pies+42 fruit juices=79 total items
(a) 37*1.65= $61.05
42*1.36= $57.12
(b) Mr Sanchez's class earned more money.
(c) Mr. Sanchez's class earned $3.93 more than Mr. Kelly's class
$61.05-$57.12= $3.93
Step-by-step explanation: