Write the equation in standard form for the circle that has a diameter with endpoints ( –
7,13) and (
–
7,
–
11).

What is the value of x in the diagram below?

The position of a moving particle is given by the position function: f(t)=-9t-t^2-0.2t^3+0.1t^4 0 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)

Which expression do you get when you eliminate the negative exponents of 4a^2 b^216a^-3 b