Equations And Inequalities Quiz

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| By Cimm8783

Cimm8783

Community Contributor

Quizzes Created: 19 | Total Attempts: 21,720

Questions: 8 | Attempts: 190 | Updated: Mar 19, 2023

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If you need practice with equations and inequalities, then this quiz will help you. Take it to see how many answers you can get.

Questions and Answers

1.

14= n+12
- A.
  
  2
- B.
  
  4
- C.
  
  12
- D.
  
  14
Correct Answer
A. 2

Explanation
The equation 14 = n + 12 implies that n is 2. This can be found by subtracting 12 from both sides of the equation, resulting in n = 2. Therefore, the correct answer is 2.

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2.

8n=64
- A.
  
  8
- B.
  
  16
- C.
  
  32
- D.
  
  64
Correct Answer
A. 8

Explanation
The equation 8n = 64 can be solved by dividing both sides of the equation by 8. This will give us n = 8, which means that when 8 is multiplied by 8, the result is 64. Therefore, the correct answer is 8.

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3.

10=5r
- A.
  
  2
- B.
  
  3
- C.
  
  4
- D.
  
  5
Correct Answer
A. 2

Explanation
The equation 10 = 5r can be solved for r by dividing both sides of the equation by 5. This gives us r = 2, which means that the value of r that satisfies the equation is 2. Therefore, the correct answer is 2.

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4.

15=10-r
- A.
  
  -5
- B.
  
  5
- C.
  
  10
- D.
  
  15
Correct Answer
A. -5

Explanation
The given equation is 15=10-r. To solve for r, we need to isolate it on one side of the equation. Subtracting 10 from both sides, we get 5=r. Therefore, the value of r is 5.

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5.

2x<-30
- A.
  
  X
- B.
  
  X
- C.
  
  X>-15
Correct Answer
A. X

Explanation
The given answer, x > -15, is correct because the original inequality states that 2x is less than -30. Dividing both sides of the inequality by 2 gives x < -15. However, since the question asks for the answer in terms of x, we can rewrite the inequality as x > -15. This means that x is any value greater than -15, which satisfies the original inequality.

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6.

12x-5<-29
- A.
  
  X
- B.
  
  X>2
- C.
  
  X
Correct Answer
C. X
7.

6x>-18
- A.
  
  X
- B.
  
  X>-3
- C.
  
  X>3
Correct Answer
B. X>-3

Explanation
The correct answer is x>-3 because when we divide both sides of the inequality by 6, the inequality sign remains the same. Therefore, x is greater than -3.

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8.

-7x>-56
- A.
  
  X
- B.
  
  X>7
- C.
  
  X
Correct Answer
A. X