Question

Which of the following shows the correct process of solving - 3°+ 4.5？ （1 point）
-3° + 4.5 = -1. 3° + 4.5 = - 1 . 1 + 4.5 = - 1 + 4.5 = 3.5
-3° + 4.5= -3.0 + 4.5 = 0 + 4.5 = 4.5
-3° + 4.5 = - 3 + 4.5 = 1.5
-3° + 4.5=(-3)°+1.5=1+4.5 = 5.5

Answer 1

The correct one is: -3° + 4.5 = -3 + 4.5 = 1.5.

Explanation: the degree symbol doesn't change the numeric value, so -3° = -3 and -3 + 4.5 = 1.5.