30-60-90 triangle..find the value of y ?

Julia is going for a walk through the neighborhood. what unit of measure is most appropriate to describe the distance she walks?

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 =

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class