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How many incorrect answers are there in this persons work: One- & Two-Step Equations Unit Test Answers Q= Question A=Answer

1.(Q)Which of the following four equations has the solution of the lowest value?
(A)x + 19 = −5

2.(Q)Which of the following equations has a different value of x than the others?
(A)x - 7/8 = -3/2

3.(Q)Yuri and Trina sold boxes of cookies. Yuri sold 14 boxes, while Trina sold n
boxes. Together, they sold a total of 37 boxes. Which equation represents the number of boxes Trina sold? How many boxes did she sell?
(A)n + 14 = 37; Trina sold 23 boxes.

4.(Q)A slice of pizza costs $3.19 and a drink costs $x. The cost of a slice of pizza and a drink together is $5.61. Complete and solve the equation that represents the cost of a drink.
(A) x + 3.19 = 5.61 x = 2.42

5.(Q)If x−5=2 , then what is the value of x?
(A) -10

6.(Q)Which of the following pairs of equations has exactly the same solution?
(A) -3.2x = 0.64 and x/4 = -0.05.

7.(Q)Which of the following can be represented by the equation 3x = 24?
(A) Andrew picks three words from a dictionary every week and lists them in his notebook. So far, he has listed 24 words. How many weeks has Andrew been doing this?

8.(Q)The temperature dropped by 12° in 5 hours. The temperature dropped the same amount every hour. Complete the equation that represents the amount of change, x , of temperature every hour and solve this equation.
(A) 5x = 12 The temperature decreased by 2.4 every hour

9.(Q)Which of the following equations has a solution of −7?
(A) 5x + 11 = -24

10.(Q)Which of the following equations has a solution different from the rest?
(A) 1/2x - 3 = 1/2

11.(Q)Lindsay practices the guitar 50 minutes on Saturday and 30 minutes on most weekdays. Last week she practiced 140 minutes. How many weekdays did she practice? Write an equation in the form px+q=r to represent this problem.
(A) 30x + 50 = 140

12.(Q)A baby elephant weighs 150 pounds when born. It gains 2 pounds per day during the first year. How many days will it take the elephant to weigh a total of 224 pounds?
(A) 37 days

13.(Q) Reann has stickers. She gives her friend half, and then her brother gives her 8 new ones. She ends up with 12 stickers. How many did she start with? Identify the operations needed to solve this problem.
(A) subtraction and multiplication

14.(Q)Sam is buying packages with 9 beads each. His mom bought him 63 more beads. Now, he has 153 beads. How many packages did he buy? Use algebra to determine the answer.
(A) 10

3 answers

Let's evaluate each answer for correctness, focusing on questions with provided equations, values, or representations.

  1. Correct: Solving \(x + 19 = -5\) gives \(x = -24\). This equation does have the lowest value.

  2. Incorrect: Solving \(x - \frac{7}{8} = -\frac{3}{2}\) gives \(x = -\frac{3}{2} + \frac{7}{8} = -\frac{12}{8} + \frac{7}{8} = -\frac{5}{8}\), which is not different from other reasonable values without additional context. More context is needed for comparison.

  3. Correct: \(n + 14 = 37\) correctly represents the situation. Trina sold 23 boxes: \(37 - 14 = 23\).

  4. Correct: \(x + 3.19 = 5.61\) leads to \(x = 5.61 - 3.19 = 2.42\).

  5. Incorrect: Solving \(x - 5 = 2\) gives \(x = 7\), not -10.

  6. Incorrect: Solving \(-3.2x = 0.64\) gives \(x = -0.2\) and \(x/4 = -0.05\) gives \(x = -0.2\). They have the same solution; correct.

  7. Correct: The equation \(3x = 24\) implies Andrew has been picking words for 8 weeks.

  8. Incorrect: The equation should be \(5x = 12\), leading to \(x = \frac{12}{5} = 2.4\) (which is phrased correctly).

  9. Correct: Solving \(5x + 11 = -24\) gives \(x = -7\): \(5(-7) + 11 = -35 + 11 = -24\).

  10. Correct: Solving \( \frac{1}{2}x - 3 = \frac{1}{2}\) gives \(x = 6\).

  11. Incorrect: The equation should be \(30x + 50 = 140\), solving gives \(x = 3\) weekdays practiced, not what the question provided.

  12. Incorrect: The weight increase calculation is \(224 - 150 = 74\), and since the increase is 2 lbs/day, it takes \(74 / 2 = 37\) days.

  13. Incorrect: The operations needed would be addition (to account for half and addition of 8) and division (to find half).

  14. Incorrect: Let \(p\) be the number of packages. So \(9p + 63 = 153\), solving gives \(9p = 90\) leads to \(p = 10\) which is correct.

Now let's summarize the incorrect answers:

  1. Q2: Incorrect
  2. Q5: Incorrect
  3. Q6: Incorrect
  4. Q8: Incorrect
  5. Q11: Incorrect
  6. Q12: Incorrect
  7. Q13: Incorrect
  8. Q14: Incorrect

Total Incorrect Answers: 8

oh. Well now I'm confused since two other sources said a different amount of correct and incorrect answers

I understand how that can be confusing, and I appreciate your patience. Let's carefully walk through each question and answer again to ensure we're evaluating each one correctly for any potential incorrect answers.

Let’s go through each question step-by-step one more time:

  1. Q1: \(x + 19 = -5\)

    • Correct, \(x = -24\) is indeed the lowest value.

  2. Q2: \(x - \frac{7}{8} = -\frac{3}{2}\)

    • Without context on the other equations, this answer could appear correct but may not be depending on what the other equations are.

  3. Q3: \(n + 14 = 37\)

    • Correct, \(n = 23\).

  4. Q4: \(x + 3.19 = 5.61\)

    • Correct, \(x = 2.42\).

  5. Q5: \(x - 5 = 2\)

    • Incorrect, the correct answer should be \(x = 7\).

  6. Q6: \(-3.2x = 0.64\) and \(x/4 = -0.05\)

    • Both equations lead to \(x = -0.2\). Correct.

  7. Q7: \(3x = 24\)

    • Correct, solves to \(x = 8\).

  8. Q8: \(5x = 12\)

    • Should yield \(x = 2.4\), which matches with the provided answer, but if the answer gives temperature decrease per hour as 2.4, it is correct.

  9. Q9: \(5x + 11 = -24\)

    • Correct, \(x = -7\).

  10. Q10: \(\frac{1}{2}x - 3 = \frac{1}{2}\)

    • Correct, solves to \(x = 6\).

  11. Q11: \(30x + 50 = 140\)

    • The correct equation should be \(30x + 50 = 140\) leading to \(x = 3\), so it's incorrect.

  12. Q12: A baby elephant gaining 2 pounds per day

    • The goal to reach 224 pounds from 150 is 74 pounds, which would take \(74 / 2 = 37\) days, which aligns with the answer provided, so it's correct.

  13. Q13: Operations for stickers problem

    • Should involve addition (new ones received) and division (for half given away), thus incorrect.

  14. Q14: He bought packages with 9 beads each, and his mother bought him 63 more. The equation should read: 9p + 63 = 153.

    • This leads to the correct answer as \(10 packages\), hence correct.

So to summarize correctness:

  • Correct Answers: 10 (Q1, Q3, Q4, Q6, Q7, Q9, Q10, Q12, Q14)
  • Incorrect Answers: 4 (Q2, Q5, Q11, Q13)

Updated Total:

  • Total Correct Answers: 10
  • Total Incorrect Answers: 4

I apologize for any confusion from the previous evaluations. It’s important to cross-check every calculation carefully! If there are specific interactions or interpretations from the other sources you mentioned, please share them; it might help clarify further the discrepancies.