Which historical period began with the invention of steam engine?

Pthreads programming: create and terminate a thread write a c++ program that creates a thread. the main will display a message “hello world from the main”. the main will create a thread that will display a message “hello world from the thread” and then terminates with a call to pthread_exit()

The three logical operators used to write compound conditions are "and," "or," and "not." a: true b: false

Which statistical function in a spreadsheet you to see how far each number varies, on average, from the average value of the list?