In how many seconds could a 9 year old boy run 100meters
A.5 sec.
b. 10 sec.
c. 20 sec

20 sec

Step-by-step explanation:

the average adult male can run 100 m in 18 seconds, you could reasonably assume 20 seconds is a fair answer

r(0,90)(x,y) . t(-5,0)

last option

step-by-step explanation:

∆def to ∆d"e"f"

- rotate 90 counterclockwise degrees

- then translated 5 to the left (x --> x - 5)

answer is the last option