The state test scores for 12 randomly selected high school seniors are shown on the right.
assume the population is normally distributed.
1424
1225
989
697
730
838
724
745
550
629
1448
940

  q

step-by-step explanation:

each line from a vertex to the midpoint of the opposite side is called a median. the point where the medians intersect, point q, is the centroid.

the centroid of δabc is point q.

4th option is correct xy=-10

if this was to u plzz mark me the brainliest

reduce the friction between its moving parts

step-by-step explanation:

in fact, by reducing the friction between the moving parts of the machine, it is possible to reduce the energy wasted due to this friction; therefore, more input energy is converted into useful work, and this will improve the efficiency of the machine.

point a is the center of the circle that passes through points e, f, and g and the center of the circle that passes through points x, y, and z.