How many significant numbers are in 15,000

Restrictions on f(x) = 1/x+5 and g(x) = x-2

Which shows the correct solution of the equation 1/2a+2/3b=50, when b=30?

The means and mean absolute deviations of the individual times of members on two 4x400-meter relay track teams are shown in the table below. means and mean absolute deviations of individual times of members of 4x400-meter relay track teams team a team b mean 59.32 s 59.1 s mean absolute deviation 1.5 s 245 what percent of team b's mean absolute deviation is the difference in the means? 9% 15% 25% 65%