Let a, b,c, be elements in group G. Show that ab and ba have the same order.

I’ve been trying all day to figure this puzzle out. i need the work for it aswell. it is a factoring polynomials tarsia. the image is below.

What unit of been sure would be appropriate for the volume of a sphere with a radius of 2 meters

Amayoral candidate would like to know her residents’ views on a public open space before the mayoral debates. she asks only the people in her office. her co-workers are an example of a census population convenience sample simple random sample