Use the triangle inequality to determine the largest angle in the figure
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Name the most appropriate metric unit for each measurement like the mass of cow

Two times a number plus three times another number equals 4. three times the first number plus four times the other number is 7. find the numbers

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)