Answer:
D
Step-by-step explanation:
2^3 equals 8, and 3^4 equals 81. 81 times 8 equals 648.
I can't read that language but I'll guess it says write a second degree equation then solve for n when d=10.



Answer: n² - 3n - 20 = 0
That doesn't factor so there is no integer n solution.
That means there are no polygons with 10 diagonals.

Answer:
-12
Step-by-step explanation:
-8 * ( 1/4) * (6)
= -12
Answer:
104
Step-by-step explanation:
did the test yourself(sorry for no proof)