When friction is
zero, what do you
notice about the
work input versus
the work output
when any pulley
system is
operated?

Do more republicans (group a) than democrats (group b) favor a bill to make it easier for someone to own a firearm? two hundred republicans and two hundred democrats were asked if they favored a bill that made it easier for someone to own a firearm. how would we write the alternative hypothesis?

In which direction does the left side of the graph of this function point? a(x) = 3x - x2 + 4x - 2

Which point has an coordinates of (2,0) ? a