David and Matthew are standing 6 feet apart. David starts walking on a diagonal towards Matthew and walks 11 feet. Matthew also begins to walk on a diagonal towards David and walks 15 feet. Will David and Matthew's paths form a triangle? Use the Triangle Inequality
Theorem to prove whether these lengths will form a triangle.
and form a triangle.
With walking these distances, David and Matthew's paths
Proof
the
-
:: False
:: True
.. 15
A>
.: 17
:: 15
:: 11
:: 6
:: will not meet
:: will meet

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)