X^2-4x-5=0
use quadratic formula to solve

x = 5, x = -1

Step-by-step explanation:

Quadratic formula: if ax² + bx + c = 0, x = (-b ± √(b² - 4ac))/2a

Plug in: x² - 4x - 5 = 0, x = (4 ± √(16 + 20))/2

Simplify: x = (4 ± 6)/2

Divide: x = 5, x = -1

step-by-step explanation:

ruth is 6 years old

step-by-step explanation:

6 + 24 = 30,   so 6/30 = .2  

if you do 1/5 it also equals .2, so that is the answer.