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Solve the following inequalities:

[tex]\[ 6x - 4 \leq -40 \][/tex]

or

[tex]\[ \frac{x}{16} \geq 1 \][/tex]


Sagot :

To solve the given problem, we need to solve the inequalities separately and then determine the union of their solution sets. Let's start with each inequality step-by-step.

### Solving the first inequality: [tex]\( 6x - 4 \leq -40 \)[/tex]

1. Add 4 to both sides to isolate the term with [tex]\( x \)[/tex]:
[tex]\[ 6x - 4 + 4 \leq -40 + 4 \][/tex]
[tex]\[ 6x \leq -36 \][/tex]

2. Divide both sides by 6 to solve for [tex]\( x \)[/tex]:
[tex]\[ \frac{6x}{6} \leq \frac{-36}{6} \][/tex]
[tex]\[ x \leq -6 \][/tex]

So, the solution to the inequality [tex]\( 6x - 4 \leq -40 \)[/tex] is:
[tex]\[ x \leq -6 \][/tex]

### Solving the second inequality: [tex]\( \frac{x}{16} \geq 1 \)[/tex]

1. Multiply both sides by 16 to isolate [tex]\( x \)[/tex]:
[tex]\[ \frac{x}{16} \times 16 \geq 1 \times 16 \][/tex]
[tex]\[ x \geq 16 \][/tex]

So, the solution to the inequality [tex]\( \frac{x}{16} \geq 1 \)[/tex] is:
[tex]\[ x \geq 16 \][/tex]

### Combining the solutions

Since the original problem uses the logical "or", we combine the solutions of the two inequalities.

The solution set for the inequality [tex]\( 6x - 4 \leq -40 \)[/tex] is:
[tex]\[ x \leq -6 \][/tex]

And the solution set for the inequality [tex]\( \frac{x}{16} \geq 1 \)[/tex] is:
[tex]\[ x \geq 16 \][/tex]

The union of these two sets is:
[tex]\[ x \leq -6 \quad \text{or} \quad x \geq 16 \][/tex]

This represents all [tex]\( x \)[/tex] that are either less than or equal to -6, or greater than or equal to 16. In interval notation, this can be written as:
[tex]\[ (-\infty, -6] \cup [16, \infty) \][/tex]

Thus, the solution to the problem is:
[tex]\[ x \leq -6 \quad \text{or} \quad x \geq 16. \][/tex]