Operating system is :

1 a collection of hardware components
2 a collection of input-output devices
3 a collection of software routines
4 all of the above

Modern businesses use different technologies to accomplish work tasks

In a compound condition, both conditions on either side of the logical operator and must be true for the overall condition to be true. a: true b: false

For her science class, elaine is creating a presentation on weather in the united states. she wants to make the presentation beautiful and interesting by drawing simple cloud or wave shapes. which is the best way for elaine to draw these shapes?