Leo is testing different types of greenhouse material to determine which type is most effective for growing strawberry bushes. he purchases two different brands of tarps from a local store. leo applies brand a to an area of the yard that receives full sunlight and brand b to another area of the yard that is in partial shade. he waters both areas daily. at the end of the study, leo concludes brand a is more effective in growing strawberry bushes. is leo's conclusion valid? explain why or why not.

In the diagram, the measure of angle 9 is 85° which angle must also measure 85°?

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)

8litres of paint can cover 129.6 m². how much paint is required to paint an area of 243m²?