Atriangle has sides with lengths of 65 centimeters, 74 centimeters, and 97 centimeters. is it a right triangle?

If an athlete can bike 6 miles in 25 minutes, how many miles will he bike in an hour and half if he continues to bike at the same rate?

If the diagram polygon abcd is a reflection across ef to make polygon a'b'c'd'.

How many and of which kind of roots does the equation f(x)=2x^4−9x^3+17x^2−16x+6 have?