Find the value of the following (-42) + 15 + (-63) can someone say this and fast

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

Points a, b, and c form a triangle. complete the statements to prove that the sum of the interior angles of triangle abc is 180

When keisha installed a fence along the 200 foot perimeter of her rectangular back yard, she left an opening for a gate.in the diagram below, she used x to represent the length in feet of the gate? what is the value? a. 10 b. 20 c. 25 d. 30