Answer:
Step-by-step explanation:

From the initial condition,

So we have that 
Answer:
1/200000
Step-by-step explanation:
first 10 km equals to 1000000cm
so 5/1000000cm
equals to 1/200000
Answer: 26.67
Step-by-step explanation: multiply 20 and 4/3
The answer is 14. This is because 63=3+x+3x-4. Then You just subtract it and then you get 64=4x. Then you just divide it and then you get x=16.