Solve the linear system. (if your answer is dependent, use the parameters s and t as necessary. if there is no solution, enter no solution.) a 2b + d = -a + b - c - 5d = 4 1 ta, b, c, d] = 1,,4s - 9 - 21,4-s+21 need ? read it talk to tutor

take it another

12cm

the answer is d

- "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."

x-3y=4

step-by-step e