9. The mean is defined as the A. number that shows up most often in a data set.
B. average of a data set.
C. middle of the data set.
D. range of the data set.

(write as unit rate) 12 meters in 28 seconds

Arunning track in the shape of an oval is shown. the ends of the track form semicircles. a running track is shown. the left and right edges of the track are identical curves. the top and bottom edges of the track are straight lines. the track has width 56 m and length of one straight edge 130 m. what is the perimeter of the inside of the track? (π = 3.14) 260.00 m 347.92 m 372.00 m 435.84 m

Which values for a and b will create infinitely many solutions for this system of equations? ax-y=8 2x+y=b