The term reliability in psychological research refers to the consistency of a research study or measuring test. For example, if a person weighs themselves during the course of a day they would expect to see a similar reading. Scales which measured weight differently each time would be of little use.
the total weight of the screws and nails is 
pounds
Answer:
No
Step-by-step explanation:
Just because the derivative is 0 at a point doesn't necessarily mean it is a relative minimum or maximum. You must be able to evaluate the derivative on both sides of the point to determine if it changes signs. Since endpoints have only one side, they cannot be relative maximums or minimums.
Answer:
18.8888888889
Step-by-step explanation:
2 5/6 = 2.83333333333
6 2/3 = 6.66666666667
2 5/6 * 6 2/3 = 2.83333333333 * 6.66666666667
2.83333333333 * 6.66666666667= 18.8888888889
