Norman bought 116 feet of fencing to put around his backyard. The backyard is a perfect square. Write an equation to find the dimensions of his backyard. Is the area big enough for a pool that is 900 feet x2 ? Let s be the length of Norman's backyard.

9 x 8 divided by (5-3)=36

- "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."