The area of a rectangular fountain is x2 + 21x + 20 square feet. A 5-foot walkway is built around the fountain. Find the dimensions of the outside border of the walkway.

a: 1/6, j: 1/4

step-by-step explanation: you are welcome

yes the total will be same because in both of them the expression.is rearranged but their sign remains the same hence it hss just been shuffled

- "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."

3100

step-by-step explanation: