Which two expressions are equivalent?
A
B
C Or
D?

 ✔

A.

z + z + z =

➡ 3z ≠

➡ L. H. S ≠ R. H. S

Clearly, the two expressions are not equivalent.

B.

13x + 9 - 2x = 15x + 9

➡ 11x + 9 ≠ 15x + 9

➡ L. H. S ≠ R. H. S

The two expressions are not equivalent.

C.

11 x² + 4x + 9 ≠ 15 x² + 9

➡ L. H. S ≠ R. H. S

The two expressions are not equivalent.

6x + 9x = 3 ( 2x + 3x )

➡ 3 ( 2x + 3x ) = 3 ( 2x + 3x )

➡ L. H. S = R. H. S

Since L. H. S is equal to R. H. S., the two expressions are equivalent.

ca = ec

cpctc makes it so that corresponding parts of the triangle you proved to be equal are equal, the other options aren't part of the part of the triangles you proved to be equal.

graph them on a graphing calculator, press 2nd trace. select intersect. hit enter until it says answer. ti 84 works best

step-by-step explanation: