A fifteen-foot tree growing in a fence row is used as a fence post, to which barbed wire is stapled at a height of five feet. Years later, the tree is thirty feet high. The fence is .

The fence will still be five feet high because the lengthening of the tree occurs at the apical meristem

Step-by-step explanation:

This is a simple and quick question to solve

years later after the tree is now thirty feet high,  The barbed wire has been initially stapled at a height of five feet.

However a tree increases from its apical meristem therefore the barbed wire fence will still remain at that same height of five feet high.

30

step-by-step explanation:

times by times

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)