Answer:
1
Step-by-step explanation:
insert the values for a and b and solve.
M= -6/5
hope this helped!!
Answer:
3 machine
Step-by-step explanation:
It is given that 6 machine each working at the same rate can complete the work in 12 days
We the has to complete in 8 days
Let we need x extra machine to complete the work in 8 days
So total number of machines =x+6
Now according to man work day equation 



x=3 machine
Step-by-step explanation:
R=2m
A=πr²
A = 3.142*2*2
=12.568 m2