Answer: think A
Step-by-step explanation:
Answer:

Step-by-step explanation:
Hello!
We can use the special binomial product formulas:
<h3>Simplify</h3>
The simplified form is 
Answer:

Step-by-step explanation:
It must end in
(divisible by 2 rule) and the digits must sum to a multiple of 9(divisible by 9 rule).
The digit sum is
.
We want to make
as low as possible because it's a higher digit than
.
If
is as low as possible, we have that the sum is
. Uh-oh.
has to be even! So
doesn't work.
If
, we have that the sum is
. Yay!
So, the answer is 
Set up a system of equations:
B=2+3C
B+C=90
The variable B is already solved, so plug into bottom equation:
2+3C+C=90
2+4C=90
4C=88
C=22
Plug C back in:
B+22=90
B=68
So B is 68 degrees and C is 22 degrees
Hope this helped!
Answer:
1/6
Step-by-step explanation:
1/3 + 1/2= <em>1</em><em>/</em><em>6</em><em>. </em><em> </em><em> </em><em> </em><em> </em><em> </em><em>so</em><em> </em><em>1</em><em>/</em><em>6</em><em> </em><em>is</em><em> </em><em>the</em><em> </em><em>answer</em>