Li Ting has three pieces of rope with lengths of 140 cm, 168 cm and 210 cm. She wishes to cut the three pieces of rope equally into smaller pieces without any leftover rope.
What is the greatest possible length of each of the smaller pieces of rope?

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)

Find the least common denominator for thesetvo rational expressions. n^2/n^2+4n+4 -3/n^2+7n+10

Pls the last one and it has to be like number 6