Subtract the number 6498 from the product of six doubles, four triples and one five. Which number did you get?

2142

Step-by-step explanation:

product of six doubles, four triples and one five: 2*2*2*2*2*2*3*3*3*3*5 =8640

8640 - 6498 = 2142

Wish this is right.

- "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."