Juan says, "when you put together unequal groups, you can only add." is he correct? explain.

Consider two groups

A = {1,w,w²}, Identity element =1

And, B= {1,-1}Identity element =1

Both are forming groups with respect to multiplication.

The first group A has 3 elements and the second group B has 2 elements.

Do, you think can we add them.

How will you add them, there are three elements in group A and 2 elements in group B, giving no benefit.

No, we can't add them.

the height of the surface increases from the center out to the sides of the road

it is c!