Which inequality is true for all real numbers? check all that apply.
1.a – b < a + b
2.ac ≥ bc
3.if a ≥ b, then a + c ≥ b + c
4.if c > d, then a– c < a – d
5.if a < b, then a < b + c

Step-by-step explanation:

The inequalities 3 and 4 are the right ones, because they are actually properties of inequalities.

The other choices aren't correct. For example, the first choice: a – b < a + b, it's not true, because you must apply the same change at each side of the inequality, otherwise you'll ruin the expression.

Choices 2 and 5 are also false.

Therefore, the right answers are 3 and 4.

part 1 answer = 8

part 2 answer = 72

step-by-step explanation:

part 1 explanation = add all of the numbers, then divide by how many numbers you have. so, 200/25 = 8.

part 2 explanation = not gonna lie, this is hard to explain, so just google how to do it.

i think it is 18

step-by-step explanation: