PLEASE HELP! Test scored of 12 students are 31, 41, 45, 48, 52, 55, 56, 56, 65, 67, 67, 69

What is the mean and standard deviation?

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 =

Due to financial difficulties the owner of 4 skateboard stores is going to close 2 of his stores. based on the money earned at each store, which two stores should remain open?

Find the distance between the point (-3,-4), and (see the picture below)