Math Word Problems and Percentages Quiz

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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?

15 Signup and view all the answers

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

8 Signup and view all the answers

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

$\frac{11}{3}$ Signup and view all the answers

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

$9x^2 - 5x - 1$ Signup and view all the answers

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

Student 1 and Student 2 Signup and view all the answers

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

3 terms, degree 4 Signup and view all the answers

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

(2, 3) Signup and view all the answers

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

$3.75$ Signup and view all the answers

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

$100 + (20 \times x)$ Signup and view all the answers

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

12% Signup and view all the answers

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

The sample of 25 watches is representative of the entire batch. 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?

To make statistically significant conclusions about the entire batch. Signup and view all the answers

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

The sample was representative of the population. Signup and view all the answers

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

The sample was too small to be meaningful. 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?

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

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

All of the players and coaches from one randomly selected team 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?

12 lawns Signup and view all the answers

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

$s = r + 1$ 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?

$E = 8(12.50 + t)$ Signup and view all the answers

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

One player each from half of the teams 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?

$12$ lawns Signup and view all the answers

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

The triangle is rotated to the right Signup and view all the answers

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

(-2, -3) Signup and view all the answers

Which transformation affects the y-coordinate of the vertices?

Translation down by 4 units Signup and view all the answers

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

BC length is different Signup and view all the answers

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

2010 Signup and view all the answers

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

Females in this country live longer than males Signup and view all the answers