Which of the following is equivalent to the semi-join expression: s ⋉ r?
a. r ⋊ s b. r ⋉ s
c. both a. and b. d. neither a. nor b.

Which is the correct sequence of steps to set up a document in landscape orientation? a. select page setup from the file menu. then click the margins tab and select landscape. b. select page setup from the edit menu. then click the margins tab and select landscape. c. select page setup from the insert menu. then click the margins tab and select landscape. d. select page setup from the format menu. then click the margins tab and select landscape

Quick pl which one of the following is considered a peripheral? a software b mouse c usb connector d motherboard

In a game with three frames, where will the objects on layer 1 appear? a. next to the play area b. in the middle of the game c. behind everything else d. in front of everything else