Which statement shows the associative property of addition? (u + 7) + 13 = u + (7 + 13) if m + 3 = 18, then 18 = m + 3. 3⋅(5⋅x)=(3⋅5)⋅x 21 + 2y = 2y + 21

Adj has a total of 1075 dance and rock songs on her system. the dance selection is 4 times the size of the rock selection. write a system of equations to represent the situation.

The function below show how much jayna and hannah charge for babysitting. which statement best compares the two plants?

Complete each statement from the information given and the triangle criterion you used. if the triangles cannot be shown to be congruent, leave the box for the second triangle blank and choose for reason “cannot be determined.” carbon - regular hexagon. ∆can ≅ ∆ by