Math Problem Statement

If the set of x values satisfying    (3x+10)/2 >2  and  3x-6<x-2  is (A,B) ,  what is A+B?

Solution

We are given two inequalities:

3x+102>2and3x6<x2\frac{3x + 10}{2} > 2 \quad \text{and} \quad 3x - 6 < x - 2

Let's solve them step by step.

First inequality:

3x+102>2\frac{3x + 10}{2} > 2 Multiply both sides by 2 to eliminate the fraction: 3x+10>43x + 10 > 4 Now subtract 10 from both sides: 3x>63x > -6 Divide by 3: x>2x > -2

Second inequality:

3x6<x23x - 6 < x - 2 First, subtract xx from both sides: 2x6<22x - 6 < -2 Now add 6 to both sides: 2x<42x < 4 Finally, divide by 2: x<2x < 2

Combine the two results:

From the first inequality, we have x>2x > -2, and from the second inequality, we have x<2x < 2.

Thus, the solution set is: 2<x<2-2 < x < 2

This corresponds to the interval (2,2)(-2, 2). Therefore, A=2A = -2 and B=2B = 2.

To find A+BA + B:

A+B=2+2=0A + B = -2 + 2 = 0

The value of A+BA + B is 0\boxed{0}.

Would you like further details, or do you have any questions?

Here are 5 related questions to explore:

  1. What if one inequality was non-strict, like 3x+1022\frac{3x + 10}{2} \geq 2?
  2. How does changing a coefficient in an inequality impact the solution range?
  3. What happens if we add an additional condition, like x0x \geq 0?
  4. How can interval notation help in representing solutions graphically?
  5. How do absolute value inequalities differ from linear inequalities?

Tip: Always check if your inequality flips when dividing by negative numbers!

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Math Problem Analysis

Mathematical Concepts

Algebra
Inequalities
Interval Notation

Formulas

(3x + 10) / 2 > 2
3x - 6 < x - 2

Theorems

Properties of Inequalities
Combination of Solution Sets

Suitable Grade Level

Grades 8-10