X+2y=9
-7x-2y=-1
solve each system by elimination

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?

If sin(x) = 0 and cos(x) = 1, what is tan(x)?

Write as a product: ac^2–ad+c^3–cd–bc^2+bd