What is 12,430,000 in expanded form

Expanded form  : 10000000 + 2000000+400000+30000.

Step-by-step explanation:

Given  : 12,430,000.

To find : what is 12,430,000 in expanded form

Solution : We have given 12,430,000.

We can see 1 is at ten million place .

2 is at million place .

4 is hundred thousand place .

3 is at ten thousand place .

0 is at the place thousand place .

Expanded form  : 10000000 + 2000000+400000+30000.

Therefore, Expanded form  : 10000000 + 2000000+400000+30000.

- "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."