Giải phương trình -3))+6=0

The angle of a triangle are given as 6x,(x-3), and (3x+7). find x then find the measures of the angles

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)

The midpoints of the sides of the large square are joined to form a smaller square. what is the area of the smaller square