Answer:
Step-by-step explanation:
By Pythagoras:
d^2 = (3.5)^2 + (4.5)^2
d^2 = 12.25 + 20.25 = 32.5
d = √32.5
Answer: B: n^2+6n+1
A=n
B=2n+6
C=n^2-1
AB-C
n(2n+6)-n^2-1
2n^2+6n-n^2+1
n^2+6n+1
Answer: p=354.3
25
Easy! You plug in 3 for n! H(3) = 3^3 - 2
3^3 = 27 - 2 = 25
