A person tosses a coin 12 times. In how many ways can he get 11 heads?

What are potential hypotheses (explanations) regarding why there are ecological equivalents between many metatherians and eutherians? discuss your hypothesis in terms of the processes that could lead to the current ecologies and distributions of metatherians and eutherians.

Mustafa contributes 11% of his $67,200 annual salary to his 401k plan. what is his pretax income

Which expression demonstrates the use of the commutative property of addition in the first step of simplifying the expression (-1+i)+(21+5i)+0