Answer: 2 hours
Step-by-step explanation:
Given : Working alone at their respective constant rates, machine A and machine B can fill a certain order in 3 hours and 6 hours, respectively.
Let t be the time taken by both of them working together.
Then, according to the question, we have
Hence, it will take 2 hours by the two machines .
Answer:sunk costs
Answer:
a =
Step 1: Write out equation
2b = 2cd + ad²
Step 2: Subtract 2cd on both sides
2b - 2cd = ad²
Step 3: Divide both sides by d²
mean= 0.65
standard deviation=