Use substitution to solve the sytem: 5x-3y=-20 and x=3y-16

Determine which expressions represent real numbers and which expressions represent complex number. asaaap! plis!

The sum of the first eight terms of an arithmetic progression is 9m + 14. the fifth term of the06 progression is 2m - 6, where m is a constant.given that the first term of the progression is 26,find the value of the common difference, d and thevalue of m.

John has 1/2 pound of oranges to share with julie. if they share the oranges equally, how much will each of them have?