Algebraic Expressions, Solving For X

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| By Burns1dn

Burns1dn

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Quizzes Created: 1 | Total Attempts: 1,251

Questions: 6 | Attempts: 1,255 | Updated: May 27, 2023

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Algebraic Expressions, Solving For X - Quiz

In each algebraic expression solve for x.

Questions and Answers

1.

2x = 10
- A.
  
  X = 3
- B.
  
  X = 19
- C.
  
  X = 5
- D.
  
  X = -7
Correct Answer
C. X = 5

Explanation
To find the value of x, we need to solve the equation 2x = 10. By dividing both sides of the equation by 2, we get x = 5. Therefore, the correct answer is x = 5.

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5
2.

1/2x = 9
- A.
  
  X = 18
- B.
  
  X = 11
- C.
  
  X = -9
- D.
  
  X = 27
Correct Answer
A. X = 18

Explanation
To solve the equation 1/2x = 9, we can multiply both sides of the equation by 2 to eliminate the fraction. This gives us x = 18. Therefore, the correct answer is x = 18.

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2
3.

-2 + x = -27
- A.
  
  X = 17
- B.
  
  X = -25
- C.
  
  X = 4
- D.
  
  X = 15
Correct Answer
B. X = -25

Explanation
To solve the equation -2 + x = -27, we need to isolate the variable x. To do this, we can add 2 to both sides of the equation. This will give us x = -25. Therefore, the correct answer is x = -25.

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2
4.

-x - 11 = 4x = -15
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The given equation is -x - 11 = 4x = -15, which is not a valid equation as it contains two equal signs. Therefore, the correct answer cannot be determined based on the given information.

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2
5.

-3/4x = 15 x = 20
- A.
  
  True
- B.
  
  False
Correct Answer
A. True

Explanation
The given equation is -3/4x = 15. To solve for x, we need to isolate x on one side of the equation. To do this, we can multiply both sides of the equation by -4/3. This will cancel out the -3/4 coefficient on x, leaving us with x = -4/3 * 15. Simplifying this, we get x = -20. Therefore, the statement x = 20 is false.

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0
6.

3 (2 + x) = 0x = 2
- A.
  
  True
- B.
  
  False
Correct Answer
B. False

Explanation
The given equation is 3(2 + x) = 0x = 2. However, this equation is not mathematically valid as it contains two equal signs, which is not allowed. Therefore, the correct answer is False.

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0

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Current Version
May 27, 2023

Quiz Edited by
ProProfs Editorial Team
Nov 01, 2010

Quiz Created by
Burns1dn

Algebraic Expressions, Solving For X

2x = 10

1/2x = 9

-2 + x = -27

-x - 11 = 4x = -15

-3/4x = 15 x = 20

3 (2 + x) = 0x = 2