Write a pseudo code that finds the sum of two 3*3 matrices and then calculate its running time.

Idon understand these and need some ! ?

Avariable of the data type arrays is storing 10 quantities. what is true about these quantities? a. the quantities all have different characteristics. b. the quantities all have the same characteristics. c. five quantities have the same and five have different characteristics. d. it is necessary for all quantities to be integers. e. it is necessary for all quantities to be characters.

What key should you press and hold to select and open multiple files at one time? enter alt control esc