Ali is creating a document on a system using his login credentials. His colleague needs to use his system to access documents. His colleague does so with his own credentials while Ali is still logged in. What type of OS allows this kind of operation?

A.
single-user/single-tasking
B.
single-user/multitasking
C.
multiuser/single-tasking
D.
multiuser/multitasking

When copying and pasting text, the first step is move your cursor type the text select the copy command select the paste command

Write a method that takes in an array of point2d objects, and then analyzes the dataset to find points that are close together. be sure to review the point2d api. in your method, if the distance between any pair of points is less than 10, display the distance and the (x,y)s of each point. for example, "the distance between (3,5) and (8,9) is 6.40312." the complete api for the point2d adt may be viewed at ~pf/sedgewick-wayne/algs4/documentation/point2d.html (links to an external site.)links to an external site.. try to write your program directly from the api - do not review the adt's source code.

Which of the following is not a way in which trees benefit the environment? a. they remove a significant amount of carbon dioxide from the atmosphere. b. they remove a significant amount of oxygen from the atmosphere. c. their roots hold soil in place, reducing rates of erosion. d. they remove ozone and particulates from the atmosphere. select the best answer from the choices provided a b c d