What are the solution(s) to the quadratic equation 40 - x2 = 0?
x= +2/10
x = +4/10
+2/5
x = 4/5

step-by-step explanation:

you can add the two numbers and divide the result by 2. or you can find the gap between the two numbers and add half of this to the smaller number.

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.

12cm

the answer is d