Iwill award ! the figure below shows the movement of a pedestrian from point b to point e. using the graph, answer the following questions:

a) what is the speed of the pedestrian bc, cd, and de?

b) after what time since the stop did he arrive at point e?

c) write the formulas for function d(t) for sections bc, cd, and de

Step-by-step explanation:

A. for BC, 40-20=20

4-0=4

20/4=5km/h

for CD, speed=0 as it stops

for DE, it is // to BC so speed also 5km/h

B. stop @ C when t=4

arrive @ E when t=10

10-4 = 6h

C. BC is d=40-5t

CD is d=20

DE is d=20-5(t-6)=50-5t

answer: 25.4 units

step-by-step explanation: radius = 12.7 units

diameter = twice the radius

diameter = 12.7 x 2

= 25.4