How is density calculated given mass and volume a. mass divided by volume d. difference of volume and mass

What is the reflection image of (5,-3) across the line y = -x?

Hell . what are the solutions to `10x^2 - 38x - 8 = 0`? is this when i find the factors and use the numbers within the factors to determine the zeros? i hope that made sense lol

Express -5 2/5 as an improper fraction.