Cost per mile P- total cost (C) divided by total miles (M).
P= C/M
Answer:

Step-by-step explanation:
Let the total amount be x
Then Ali got 1/8x With 7/8x left
Juma got 7/40x with 7/10x left
Musa, Khalid and Mustafa got 7/30x each
since 
7x=18000

Answer:
Step-by-step explanation:
You cant do a square root for a negative number.
Answer:
3/2
Step-by-step explanation:
move the 3x to the other side and divide it by 2
hi
formula for cicrle circumference is 2 *radius*Pi
as radius is 45, Pi is 3.14....
I let you do the math...