Discover a wealth of knowledge at Westonci.ca, where experts provide answers to your most pressing questions. Connect with a community of experts ready to help you find accurate solutions to your questions quickly and efficiently. Explore comprehensive solutions to your questions from knowledgeable professionals across various fields on our platform.

Find all real numbers [tex]x[/tex] such that [tex]4x + 2 \ \textgreater \ 14[/tex] and [tex]-21x + 1 \ \textgreater \ 22[/tex].

Click on the correct answer.

A. [tex]x \ \textgreater \ 3.5[/tex] and [tex]x \ \textless \ -1[/tex]

B. [tex]x \ \textgreater \ 3.5[/tex] and [tex]x \ \textless \ -1/21[/tex]

C. [tex]x \ \textgreater \ 3[/tex] and [tex]x \ \textless \ -1[/tex]

D. [tex]x \ \textgreater \ 3[/tex] and [tex]x \ \textless \ -1/21[/tex]


Sagot :

To solve this problem, we need to address each inequality individually and then combine their solutions. Here are the steps:

### Step 1: Solve the first inequality [tex]\(4x + 2 > 14\)[/tex]

1. Subtract 2 from both sides of the inequality:
[tex]\[ 4x + 2 - 2 > 14 - 2 \][/tex]
Simplifies to:
[tex]\[ 4x > 12 \][/tex]
2. Divide both sides by 4:
[tex]\[ \frac{4x}{4} > \frac{12}{4} \][/tex]
Simplifies to:
[tex]\[ x > 3 \][/tex]

### Step 2: Solve the second inequality [tex]\(-21x + 1 > 22\)[/tex]

1. Subtract 1 from both sides of the inequality:
[tex]\[ -21x + 1 - 1 > 22 - 1 \][/tex]
Simplifies to:
[tex]\[ -21x > 21 \][/tex]
2. Divide both sides by -21. Note that dividing by a negative number reverses the inequality sign:
[tex]\[ \frac{-21x}{-21} < \frac{21}{-21} \][/tex]
Simplifies to:
[tex]\[ x < -1 \][/tex]

### Combining the solutions:
- From the first inequality, we have [tex]\(x > 3\)[/tex].
- From the second inequality, we have [tex]\(x < -1\)[/tex].

Thus, we need [tex]\(x\)[/tex] to be both greater than 3 and less than -1 simultaneously.

### Conclusion:
There are no real numbers [tex]\(x\)[/tex] that satisfy both inequalities at the same time. Therefore, the solution set is the empty set.

[tex]\[ \boxed{\text{No real numbers } x \text{ satisfy both inequalities}} \][/tex]