Find the perimeter of triangle xyz with vertices x(3,7), y(-1,-5) & z (6,-4).

Name the most appropriate metric unit for each measurement like the mass of cow

An arc subtends a central angle measuring 7pi/4 radians what fraction of the circumference is this arc?

It is given that the quadratic equation hx²-3x+k=0, where h and k are constants, has roots [tex] \beta \: and \: 2 \beta [/tex]express h in terms of k