Which statement about quadrilateral ABCD can be proved to be true? A. Consecutive angles of a parallelogram are congruent.
B. The diagonals of ABCD bisect opposite angles.
C. Consecutive angles of ABCD are supplementary.
D. Diagonals of ABCD are congruent.

i think it is 70

step-by-step explanation:

srry idk

step-by-step explanation:

- "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."