Aright triangle has legs with lengths 20 cm and 21 cm.

what is the length of the hypotenuse?

Clara schumann is buying bagels for her coworkers, she buys a dozen bagels priced at $5.49 a dozen. the bakery's cost for making the bagels is $2.25 per dozen. what is the markup rate based on selling price on a dozen bagels?

The areas of two similar triangles are 72dm2 and 50dm2. the sum of their perimeters is 226dm. what is the perimeter of each of these triangles?

Let f(x) = 5/x and g(x)=2x2+5x. what two numbers are not in the domain of f o g