Answer is B: 150
write two equations
r+s=190
4r+3s=720
solve by substitution
the get r=150 s=40
Answer:
c
Step-by-step explanation:
Answer:
The number of ways is
Step-by-step explanation:
From the question we are told that
The number of factories visited is 
The number of factories to be visited by a representative r = 5
The number of way to visit the 5 factories is mathematically represented as
Where P represents permutation
=>
=>
=>
Answer:
x = 6
Step-by-step explanation:
-5(-2) + [8(-2)/4] = 10+(-16/4) = 10-4 = 6
Answer: 1.3
Step-by-step explanation:
12-8 = 4
4/3 = 1.3