Which of the following best illustrates closure of addition for the set of whole numbers? a. -2+-3=-5 b. 2.1+2.9=5 c. 2+(-3)=-1 d. 2+3=5

When i add money am i supposed to make it like this 7+12 or 7.00+12.00 because i got 19 dollars for my answer

When a rectangle is dilated, how do the perimeter and area of the rectangle change?

Asquare has a perimeter of sixteen centimeters. what is the length of each of its sides? a. 8 cm c. 9 cm b. 4 cm d. 10 cm select the best answer from the choices