Answer:
10
Step-by-step explanation:
Using the distance formula,

Answer: 15
Step-by-step explanation:
Add 5 to 40, you get 45, then divide 45 by 3, you get a result of 15
The answer will be 6118.4
X^2-8x+16= (x-4)^2 because -4 and -4 add to -8 but multiply to 16. Hope that helped.