X What is the
exchange rate of the
US dollar in
Switzerland when
the exchange rate of
the dollar in Denmark
is 641.40 and the
exchange rate of the
Swiss franc in
Denmark is 656.75?

Find the midpoint of the segment with the given endpoint k(-4,4) and l(6,12)

Can someone me with this problem . show your work .

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)