Which sentence uses correct subject-verb agreement? A. The river through our cities are polluted

B. Mountains in Colorado is beautiful.

C. The book about South American rivers is overdue.

D. The trees around our state is blooming.

4x and 6y

im not sure though

the answer for this question is : 360°

step-by-step explanation:

we have been given a triangle   we need to tell which one of these is a triangle below to map onto itself.

360° rotation is the complete rotation which eventually leads to the same figure which is given.

the correct will be, that is 360° that will cause the triangle below to map onto itself.