1 = 4/r + 4/2r
multiply each side by 2r
2r = 8 +4
2r = 12
r = 6
It takes Julius 6 hours to do the job
It takes Darnell 12 hours to do the job
It takes Darnell 12 hours to do the job, just took the test
x km : 7,735 m
kilometers : meters = 1 : 1,000
(1 meter) ÷ (1,000)
1 meter = 0.001 km
7,735 meters = 7.735
Correct Answer = A) 7.735 km
Answer:
D. -9
Step-by-step explanation: