A180 ft long board is cut into 3 pieces. these second pieces of board is twice as long as the first. the third piece of board is six times as long as the first. what is the length of the first of the board? a) 20 ft b) 40 ft c) 60 ft d) 120 ft

C if im correct A 180 ft board is cut into 3 pieces so 60,120,180!

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)

what are the