The height (h) of a stone, in meters, thrown into the air can be modeled by the equation h=-4.9t^2+20t+10, where t represents time in seconds. how many seconds will it take for the stone to hit the ground (h=0) after it is thrown into the air? round your answer to the nearest tenths of a place.

Do graduates from uf tend to have a higher income than students at fsu, five years after graduation? a random sample of 100 graduates was taken from both schools. let muf be the population mean salary at uf and let mufsu be the population mean salary at fsu. how should we write the alternative hypothesis?

If lmn=xyz, which congruences are true by cpctc? check all that apply

Name each raycalculation tip: in ray "ab", a is the endpoint of the ray.