Which of the following is true? No accessor method for the average variable should be added, otherwise the user might enter an incorrect average value. The mutator method should be added so the average can be added by the user. The accessor method should be added so the average can be added by the user. No mutator method for the average variable should be added, otherwise the user might enter an incorrect average value. The average variable should be declared as public so the user can make changes.

Write a method named addall that could be placed inside the hashintset class. this method accepts another hashintset as a parameter and adds all elements from that set into the current set, if they are not already present. for example, if a set s1 contains [1, 2, 3] and another set s2 contains [1, 7, 3, 9], the call of s1.addall(s2); would change s1 to store [1, 2, 3, 7, 9] in some order. you are allowed to call methods on your set and/or the other set. do not modify the set passed in. this method should run in o(n) time where n is the number of elements in the parameter set passed in.

Sally is editing her science report about living things. she needs to copy a paragraph from her original report. order the steps sally needs to do to copy the text to her new document.

You have a small company and want to keep your costs low, but it is important your employees share data. which network would provide you with the most economical solution?