How do you solve using substitution for this equation?
2x+y=-4
-3x+y=1

What is the value of the expression below? (81^2)^1/8

Aflower has 26 chromosomes. to create a new flower, how many chromosomes would a sperm cell have? what is this process called? part 2: within a flower cell that has 26 chromosomes, how many chromosomes would a cell that is created within the stem of a flower as it grows, have? what is this process called?

Use sigma notation to represent the following series for 9 terms.