The distance, d kilometers, to the horizon, seen from a height of h meters, is given by the relationship
d=8 V. From one of the local mountains, an observer notices that she can see an island on the horizon
40 km away. How high up the mountain is the observer?
A) 5 V5 m
B) 125 m
C) 1,000 m
D) 25 m

answer: sorry i can't you.

step-by-step explanation:

i don't see any

step-by-step explanation:

isaiah walks 3 miles due north, turns and then 5 miles due east. how far is he from his starting point?

a^2 + b^2 = c^2

let c = distance from starting point.

(3)^2 + (5)^2 = c^2

9 + 25 = c^2

34 = c^2

sqrt{34} = sqrt{c^2}

sqrt{34} = c