What adds to -8 and multiplies to -20

The ratio of two numbers is 5 to 4. the sum of the numbers is 99. what number is the greater of the two numbers?

What expression is equivalent to 1/2(2+3x-6)

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?