Math Word Problems and Percentages Quiz
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Questions and Answers

Which equation represents line segment AB on the Cartesian plane?

  • x = 3
  • x = -3
  • y = -3
  • y = 3 (correct)
  • Which company has the highest charge for each kilometre driven?

  • Company X
  • Company Y
  • Company W
  • Company Z (correct)
  • How do the surface areas of the three composite objects compare?

  • Object 2 has a greater surface area than Object 1.
  • The surface area of Object 1 is equal to the surface area of Object 3.
  • Object 3 has a greater surface area than both Object 1 and Object 2. (correct)
  • The surface areas of the three objects are the same.
  • In the 3-D object made of identical cubes, what is the total number of cubes used?

    <p>15</p> Signup and view all the answers

    What is the value of 6 - 4 ÷ 2 - 23 × 0.75?

    <p>8</p> Signup and view all the answers

    What is the value of x in the equation 3(2x - 1) = 2(x + 6)?

    <p>$\frac{11}{3}$</p> Signup and view all the answers

    Which expression could represent Polynomial 4 if the sum of all four expressions is 6x?

    <p>$9x^2 - 5x - 1$</p> Signup and view all the answers

    Which two students correctly simplified the expression 16. 3x (4x - 6) 2 (3x)?

    <p>Student 1 and Student 2</p> Signup and view all the answers

    How many terms and what is the degree of the modelled polynomial expression in the diagram?

    <p>3 terms, degree 4</p> Signup and view all the answers

    What are the blade length and height of the wind turbine that are proportional to each other?

    <p>(2, 3)</p> Signup and view all the answers

    What is the height of the small sail if the scale factor of the enlargement is 2.50?

    <p>$3.75$</p> Signup and view all the answers

    What is the total cost of renting a car at Company X if a person drives 20 kilometers?

    <p>$100 + (20 \times x)$</p> Signup and view all the answers

    What percentage of the 25 watches tested were defective according to the manager's survey?

    <p>12%</p> Signup and view all the answers

    What implication did the manager assume by selecting 25 watches out of a batch of 750 to test?

    <p>The sample of 25 watches is representative of the entire batch.</p> Signup and view all the answers

    Why was it important for the manager to assume that the sample of 25 watches was representative of the population?

    <p>To make statistically significant conclusions about the entire batch.</p> Signup and view all the answers

    Which assumption underlies the manager's decision to conclude that 12% of the 750 watches were defective?

    <p>The sample was representative of the population.</p> Signup and view all the answers

    If the manager had tested only 5 out of the 750 watches, what assumption would he have violated?

    <p>The sample was too small to be meaningful.</p> Signup and view all the answers

    What could be a possible flaw in the manager's conclusion about the defect rate in the 750 watches?

    <p>Some defective watches might not have been included in the sample</p> Signup and view all the answers

    What is the most reliable sample for the soccer tournament organizer's survey?

    <p>All of the players and coaches from one randomly selected team</p> Signup and view all the answers

    If Dale earned $180 in one month and $45 by washing cars, how many lawns did he mow at $9 each?

    <p>12 lawns</p> Signup and view all the answers

    In the inequality q > r, which of the following represents s if s = q + 1?

    <p>$s = r + 1$</p> Signup and view all the answers

    For Alice's total daily earnings, which equation is correct given she works 8 hours at $12.50 per hour plus tips?

    <p>$E = 8(12.50 + t)$</p> Signup and view all the answers

    Which of the following would provide the least reliable results for the soccer tournament survey?

    <p>One player each from half of the teams</p> Signup and view all the answers

    If Dale earned $180 in one month and $45 by washing cars, how many lawns did he mow at $8 each?

    <p>$12$ lawns</p> Signup and view all the answers

    What is the result of the 90° clockwise rotation about vertex L' on triangle JKL?

    <p>The triangle is rotated to the right</p> Signup and view all the answers

    After the translation and rotation, what are the new coordinates for vertex J?

    <p>(-2, -3)</p> Signup and view all the answers

    Which transformation affects the y-coordinate of the vertices?

    <p>Translation down by 4 units</p> Signup and view all the answers

    How do similar triangles ABC and DEF differ in side BC?

    <p>BC length is different</p> Signup and view all the answers

    In which year does the chart show the highest life expectancy for males?

    <p>2010</p> Signup and view all the answers

    What assumption supports predicting increased life expectancy in 2020 for females?

    <p>Females in this country live longer than males</p> Signup and view all the answers

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