A triangle has sides with lengths of 28 millimeters, 45 millimeters, and 53 millimeters. Is it a right triangle?

Fiona races bmx around a circular dirt course. if the radius of the course is 70 meters, what is the total distance fiona covers in two laps of the race? a. about 30,772 meters b. about 15,386 meters c. about 879.2 meters d. about 439.6 meters e. about 219.8 meters23 points hurry

Sam claims that cos x =sin y if x and y are congruent angels. is sam correct ?

It says factor each expression completely 8y+48