en una calle hay 5 casas numeradas del uno al cinco. una de ellas es azul, otra es roja, otra es verde, otra es blanca y otra es gris. se sabe que las casas azul y blanca tienen número par; que la casa roja solo tiene una casa al lado, y que la casa azul está junto a las casas gris y roja. ¿de qué color es la casa tres?

phosphate, calcium ion, chloride ion, neon atom

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."