There are 30 students in a class. of those, 15 take history, 18 take geography, and 5 take neither of these subjects. how many students
take both subjects?

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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?

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What is the missing reason in the proof? segment addition congruent segments theorem transitive property of equality subtraction property of equality?