Help pls!! What is the length of AC?

G) AC = 12

Step-by-step explanation:

5/10 = (x + 5)/(3x + 3)

15x + 15 = 10x + 50

5x = 35

x = 7

AC = 7 + 5 = 12

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