Find the interquartile rang for the data set: 10,3,8,6,9,12,13

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)

When i'm with my factor 5, my prodect is 20 .when i'm with my addend 6' my sum is 10.what number am i

In the diagram, ab is tangent to c, ab = 4 inches, and ad = 2 inches. find the radius of the circle.