What is the sum?

A.

B.

C.

D.
These two matrices cannot be added.

Follow these steps using the algebra tiles to solve the equation −5x + (−2) = −2x + 4. 1. add 5 positive x-tiles to both sides and create zero pairs. 2. add 4 negative unit tiles to both sides and create zero pairs. 3. divide the unit tiles evenly among the x-tiles. x =

What is the frequency of the sinusoidal graph?

Choose the more precise measurement. 26.4 cm or 8.39 cm