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Serjik [45]
3 years ago
11

Solve the compound inequality 6b < 36 or 2b + 12 > 6.

Mathematics
2 answers:
Vlad1618 [11]3 years ago
7 0

Answer:

All real numbers (-\infty, \infty)

Step-by-step explanation:

First we solve the following inequality

6b < 36

Divide by 6 both sides of the inequality

b

The set of solutions is:

(-\infty, 6)

Now we solve the following inequality

2b + 12 > 6

Subtract 12 on both sides of the inequality

2b + 12-12 > 6-12

2b> -6

Divide by 2 on both sides of the inequality

\frac{2}{2}b> -\frac{6}{2}

b> -3

The set of solutions is:

(-3, \infty)

Finally, the set of solutions for composite inequality is:

(-\infty, 6)  ∪ (-3, \infty)

This is: All real numbers (-\infty, \infty)

Debora [2.8K]3 years ago
6 0

Answer:

Answer is all real numbers.

<~~~~~~~~~~~~~~~~~~~~~~~~~~~~~>

---------(-3)---------------------(6)-------------

Step-by-step explanation:

6b<36

Divide both sides by 6:

b<6

or

2b+12>6

Subtract 12 on both sides:

2b>-6

Divide both sides by 2:

b>-3

So we want to graph b<6 or b>-3:

               o~~~~~~~~~~~~~~~~~~~~~~~~~~ b>-3

~~~~~~~~~~~~~~~~~~~~~~~~o                        b<6

_______(-3)____________(6)___________

So again "or" is a key word! Or means wherever you see shading for either inequality then that is a solution to the compound inequality.  You see shading everywhere so the answer is all real numbers.

<~~~~~~~~~~~~~~~~~~~~~~~~~~~~~>

---------(-3)---------------------(6)-------------

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