Pamela spent 2/3 of an hour doing homework. she solved math problems for 2/5 of that time and read her science book for 3/5 of that time. what fraction of one hour did pamela spend
solving math problems?
reading her science book?

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)

Can you me find the missing length. i attached an image.

Which number line correctly shows 0.8 + 0.3?