A physician that must report to survey by 7:00 am with tolerance of 8 min A.| t-7h |< 8 min

B. | t-8 min| <7h

C. | t+ 7h| < 8min

D.|t+ 8 min|< 7h

Solve this system of equations. 12x − 18y = 27 4x − 6y = 10

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%

Which expressions equal 9 when x=4 and y=1/3 a. x2+6y b. 2x + 3y c. y2-21x d. 5 (x/2) -3y e. 3x-9y