Is PQR ~ XYZ? If so, name which similarity postulate or theorem applies.

Factorize: x^2+8x+10 i just solved it but i don't know if the process is correct

Line l passes through points (0,4) and (3,6) what is the slope of a line that is parallel to line l -2/3 -3/2 2/3 3/2

The formula for the lateral area of a right cone is la = rs, where r is the radius of the base and s is the slant height of the cone.which are equivalent equations?