rosie is evaluating the sum 3+7+12+8 and decides to add 3 and 7 together and 8 and 12 together before finally adding both results. which of the following allows her to do this initial grouping

If you asking in property, it would be the communitative property

Step-by-step explanation:

step-by-step explanation:

x =±sqrt(1/3)

step-by-step explanation:

x+4/6x=1/x

multiply each side by 6x to get rid of the fractions

6x*(x+4/6x)=1/x*6x

distribute

6x^2 +4 = 6

subtract 4 from each side

6x^2 +4-4 = 6-4

6x^2 =2

divide by 6

6x^2/6 = 2/6

x^2 = 1/3

take the square root of each side

sqrt(x^2) = ±sqrt(1/3)

x =±sqrt(1/3)