There are 20 more boys than girls in a group. The ratio of the number of boys to girls is 9:4. How many girls are there?

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

Combine like terms to make a simpler expression 3z+z

2. using calculations based on a perpetual inventory system, determine the inventory balance altira would report in its august 31, 2021, balance sheet and the cost of goods sold it would report in its august 2021 income statement using the average cost method. (round "average cost per unit" to 2 decimal places.)