Hola! Hay algo de matemática que no entiendo y es que la maestra puso × 9 = osea me falta un número adelante y atrás pero no entiendo :(

- "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."

v = 1/3 a^2h

step-by-step explanation:

the volume is 1/3 a^2h.

125 yards

step-by-step explanation:

i take 75 plus 50.