What is the value of (-1/2)-4? O -16

O -1/16

O 1/16

O 16

need help fast pls?
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Janet drove 300 miles in 4.5 hours. write an equation to find the rate at which she was traveling

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?

Each cookie sells for $0.50 sam spent $90 on baking supplies and each cookie cost $0.25 to make how many cookies does sam need to sell before making a profit formula: sales> cost