Answer:
The degree of polynomial is 5.
Step-by-step explanation:
I suppose the polynomial is 
. To find the which degree this polynomial is, we consider the highest exponent of the term which is 
, the 5 is our highest degree of the term and thus, 5 is our highest degree of polynomial.
Well 500 mm = 50 cm so if you add both segments together you will get a 50+30=80cm segment
Y^2 + 5Y + 2Y^2 - 4Y= ?
add up the like terms
(Y^2 + 2Y^2) + (5Y - 4Y)=
=3Y^2 + 3Y
One solution- if the graphs of the equations intersect, then there is one solution that is true for both solutions.
No solutions- If the graphs of the equation do not intersect (example-if they are parallel) there are no solutions that there are true for both equations.
<span />
Answer: The graph shows everything you asked for
