What angle relationship describes ∠UQR and ∠WRT?

alternate interior angles
alternate exterior angles
corresponding angles
vertical angles

Acylinder with a base diameter of x units has a volume of jxcubic units which statements about the cylinder are true? check all that apply. the radius of the cylinder is 2 x units. the radius of the cylinder is 2x units. the area of the cylinder's base is 200 square units. the area of the cylinder's base is a square units. the height of the cylinder is 2x units. the height of the cylinder is 4x units. mark this and return save and exit next submit

Factor the expression using the gcf. the expression 21m−49n factored using the gcf

Asap! i'm not good math and i'm lost.