if a = (0,3) and b = (8,9) and b is the midpoint of ac, what is the length ac.

AC = 20

Step-by-step explanation:

Calculate the length of AB:

rise: 9-3=6

run: 8-0=8

use Pythagoras theorem:

length^2=rise^2 + run^2

length =√36+64

length = 10

since B is the midpoint of AC, AB = BC

length of AC = 10*2 = 20

step-by-step explanation:

hans did not square the 40-unit side; he merely multiplied it by 2.   incorrect.