What fraction altogether is 5/12 and 4/12

9/12

Step-by-step explanation:

5      4       9

_      _  =   _

12    12     12

When both denominators are the same keep it. Then add the top no matter what. if it says 6+3 add that then you would get 9

                                                                                _

                                                                               12

So here you go the answer is 9/12

- "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."

can you put the picture up?

step-by-step explanation: