Ms. Chin asked her students to use the properties of multiplication to rewrite the expression (negative 5) (Negative StartFraction 2 over 7 EndFraction) Left-bracket (StartFraction 4 over 11 EndFraction) (negative 9) Right-bracket. The table below shows the properties that each of four students used to rewrite the expression.

- "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."

answer is  

c.

36

step-by-step explanation:

answe: it will take 4.5 hours for naomi and clair to paint an equal number of square feet

hope i

-lavira : )