A quadratic equation given roots is solved by using the relation
from the question,
sum of the root will be
and also, product of the roots will
be
now substituting the sum of roots and product of roots into the equation
as the quadratic equation for the root 3/4 and -4
Answer:
Workers of army contract were more productive.
Step-by-step explanation:
To determine on which contract the workers were more productive compute the work done per hour by the workers for both contracts.
Number of devices = 2,300
Number of workers = 25
Number of weeks = 2 weeks
Number of hours per week = 40
The number of hours it took 25 workers to produce 2300 devices is =
Then number of devices produced in 1 hour is =
Number of devices = 5,500
Number of workers = 35
Number of weeks = 3 weeks
Number of hours per week = 40
The number of hours it took 35 workers to produce 5500 devices is =
Then number of devices produced in 1 hour is =
The workers for the army contract are more productive since they produce 1.31 devices per hour whereas the workers for navy contract produces 1.15 devices per hour.
