The minimum number of triangles needed to construct the polygon Sophia made is 3. Which could show Sophia’s polygon? A 4-sided figure.
A 6-sided figure.
A 5-sided figure.
A 4-sided figure.

Which shows one way to determine the factors of 4x3 + x2 – 8x – 2 by grouping?

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)

I’m on question 7 it says a covered water tank is in the shape of a cylinder the tank has a 28 inch diameter and a height of 66 inches to the nearest square inch what is the surface area of the water tank