How do very long radio waves reach stations beyond the curvature of the earth? a. they pass through the middle of the earth c. they are relayed by multiple stations b. they cannot reach stations around the curvature of the earth d. they bounce off a charged layer of the atmosphere

Astore has apples on sale for three dollars or 2 pounds how many pounds of apples can you buy for nine dollars if an apple is approximately 5 ounces how many apples can you buy for nine dollars

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)

If f(x) = 4x - 3 and g(x) = x + 4, find (f - g) (x)