Answer:
14
Step-by-step explanation:
2(2n + 2)= 5n - 10
4n + 4 = 5n - 10
n=14
The MODE is the number or numbers that occur most often in a set.
Answer:

Step-by-step explanation:
The standard equation of an ellipse is:
(x/h)^2+(y/k)^2=1 where h and k are the radii of the x and y axis...so
(x/14)^2+(y/10)^2=1 or if you prefer
x^2/196+y^2/100=1
4
I also recommend writing the polynomial as -6x^3y^2 5x^4-7z as it was a bit confusing to tell which numbers were the exponents.