Answer is 3.
3,6
3,6,9,12,15,18,21,24,27
3,6,9,12,15,18,21,24,27,30
I believe the answer is 142 degrees.
38 degrees and 7 are adjacent, meaning adding them up will get you 180 degrees. 180-38=142, so 7 is 142.
Number 7 and 5 are corresponding, so they are equal.
This means that 5 is 142 degrees.
(I think)
The number added to the polynomial by completing the square is 
Explanation:
Given that the polynomial is 
We need to determine the number that is added to the polynomial to complete the square.
The last term of the polynomial can be determined by dividing the term 17 by 2 and then squaring the term.
Thus, we have,
Last term = 
Now, squaring the term, we have,
Last term = 
Thus, the number added to the polynomial by completing the square is 
(this answer has been removed)