The sum of half of the first number and 1/3 of the second number is represented by 1/2a+1/3b=9.

One of the same side angles of two parallel lines is 20° smaller than the other one. find the measures of these two angles.

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

Anumber cube is rolled two times in a row. find the probability it will land on 2 on the first roll and a number greater then 4 on the second roll