Please Help
again..

Question

Please Help
again..

anonymous · Answer

attachment

anonymous · Answer

Im guessing @Calcmathlete will help me here.. if your not busy. XD

anonymous · Answer

4. Additive inverse
5. Additive Identity

anonymous · Answer

Additive Inverse: If we add a number and its additive inverse, the sum is 0.
Additive Identity: If we add a number to 0, the sum is that number.

anonymous · Answer

@Mr._To Are you sure that Reason 3: Additive Inverse and Reason 4 is the addition property of equality?

anonymous · Answer

Not 100% sure, but just a suggestion

anonymous · Answer

In two-column proof, the reason for number 3 is the result of the operation from number 2 and so on...
1. 3(x - 4) = 33                         1. Given
2. 3x - 12 = 33                          2. Distributive from statement 1
3.  3x - 12 + 12 = 33 + 12        3. Addition Prop of Equ. from statement 2
4. 3X + 0 = 45                            4. Additive Inverse from 3. Actually we also need simply on the right side.
5. 3x = 45                                   5 Additive Identity from 4.

anonymous · Answer

In the United States, Geometry is the most controversial course especially in teaching. You can find 5 Geometry prove the same problem in 5 different ways.  For example, we can skip statement #4 and the #5 reason is "simplify".