First you add 1/2 and 3/4:
5/4n
5/4n = 12 so you divide both sides by 5/4
That gives you the answer of n= 9.6.
Hope this helped :)
A B and D
A & D are known as irregular polygons
Answer:
degree 3, binomial
Step-by-step explanation:
the highest exponent is the degree, it's two terms so bi meaning 2 makes it a binomial
