Tom is going to build a fence around his garden which is a rectangle measuring 8 m by 16 m. he will first put in posts which will be 4 m apart. if the posts cost $5 each, what will the total cost for all the posts?

Is the square root of 4 plus the square root of 16 rational?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 a. at what time does the particle reverse direction? b. when is the displacement positive? (round one decimal place and answer in interval notation) c. when is the displacement negative? (round one decimal place and answer in interval notation) d. when is the particle’s acceleration positive? (round one decimal place and answer in interval notation) e. when is the particle’s acceleration negative? (round one decimal place and answer in interval notation)

Select the conic section that represents the equation. 3x2 + 3y2 -2x + 4 = 0