Math Problem Statement

Solve inequality problems involving algebraic expressions and comparison statements as seen in the uploaded document.

Solution

The uploaded document contains multiple-choice inequality problems in Arabic. Let’s go through each problem one by one.


Problem 1

Solve the inequality: 3(x2)+4>5(x+3)53(x - 2) + 4 > 5(x + 3) - 5

Solution:

  1. Expand both sides: 3x6+4>5x+1553x - 6 + 4 > 5x + 15 - 5 3x2>5x+103x - 2 > 5x + 10

  2. Move terms involving xx to one side and constants to the other: 2>2x+10-2 > 2x + 10 12>2x-12 > 2x

  3. Divide by 2: x<6x < -6

Answer: Option (2) x<6x < -6


Problem 2

Identify the value of xx that satisfies both inequalities: 2x+13>5and2x2<3\frac{2x + 1}{3} > 5 \quad \text{and} \quad 2 - \frac{x}{2} < 3

Solution:

  1. Solve the first inequality: 2x+13>5\frac{2x + 1}{3} > 5 Multiply by 3: 2x+1>152x + 1 > 15 2x>142x > 14 x>7x > 7

  2. Solve the second inequality: 2x2<32 - \frac{x}{2} < 3 Move 2 to the other side: x2<1-\frac{x}{2} < 1 Multiply by -2 (reversing the inequality): x>2x > -2

  3. Combine both results: x>7x > 7

Answer: Option (2) x>7x > 7


Problem 3

Given x>5x > 5, determine which of the following is necessarily true.

Solution:

Let’s analyze each option with the condition x>5x > 5:

  1. Option (1): 204x>x+220 - 4x > x + 2
  2. Option (2): 4+2x>544 + 2x > 54
  3. Option (3): 5x10>205x - 10 > 20
  4. Option (4): 3x+4<193x + 4 < 19

After testing each option, Option (3) 5x10>205x - 10 > 20 is correct when x>5x > 5.


Problem 4

Given c<0c < 0, a<ba < b, and a,b,c>0a, b, c > 0, identify the true statement.

Answer: Option (3) abc<0a \cdot b \cdot c < 0


Problem 5

Given a>6a > 6, b<12b < 12, identify the statement that cannot be true.

Answer: Option (3) ba>6b - a > 6

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Math Problem Analysis

Mathematical Concepts

Inequalities
Algebra
Linear Inequalities

Formulas

Distributive property: a(b + c) = ab + ac
Addition and subtraction of inequalities
Multiplication and division of inequalities by a constant

Theorems

Properties of Inequalities

Suitable Grade Level

Grades 10-12