Which expression can be used to show a set of thirty books divided into five groups?

If 1 is divided by the sum of y& 4.the result is equal to 3 divided by 4, find the value of m

To which sets of numbers does -12 belong? choose all answers that are correct. a) natural numbers b) integers c) real numbers d) irrational numbers

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