Miss Pacheco, Mr. Edwards and Mr. Richards are three math teachers at a Turner middle school. Miss Pacheco is three years older than Mr. Richards. Mr. Edwards is twice as old as Mr. Richards. The sum of Mr. Richards age and mr. Edwards age is 81. How old is each person ?

- "runner b is moving at a slower rate."

- "the graphs shown are graphs of distance(km) against time(min).

the slopes of this graphs are are given by:

slope = (change in y)/(change in x)

= (change in distance)/(change in time)

this is the formula for finding the speed. so, the slope of these graphs represent the speed of the runner.

taking each division in the graph to represent 1 on both axis:

runner a ⇒ speed = (2-0)/(1-0)

= 2/1

= 2 km/min

runner b ⇒ speed = (3-0)/(3-0)

= 3/3

= 1 km/min

this shows that   runner b is moving at a slower rate."

1010: 3030

is it i think

step-by-step explanation:

no solution.

d

because parallelagram have all 4 angels the same size dependeing and a rectangle and square are oth parallelogram