What would be the missing angle?

Which of the following answers is 5/25 simplified? 1/5 5/5 2/5 1/25

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 area of the triangle 10 13 12