Timed Mini Exam 20 — Timed Mini Exams

Questions in this quiz (10)

1. In the square below, $$12w = 3x = 4y$$. What fractional part of the square is shaded?

   • $$\frac{11}{15}$$
   • $$\frac{11}{13}$$
   • $$\frac{14}{25}$$
   • $$\frac{2}{3}$$

2. The average of temperatures at noontime from Monday to Friday is 50. The lowest one is 45. What is the possible maximum range of the temperatures?

   • 40
   • 25
   • 35
   • 20

3. If 4 times a number n is subtracted from 11, the result is negative. Which of the following gives the possible value(s) for n?

   • 0 only
   • 10 only
   • All $$n > \frac{11}{4}$$
   • 3 only

4. Two numbers are less than a third number by 30 percent and 37 percent respectively. How much percent is the second number less than the first?

   • $$33\%$$
   • $$27\%$$
   • $$10\%$$
   • $$15\%$$

5. The area of an equilateral triangle is 9. What is the area of its circumcircle?

   • $$12\pi$$
   • $$2\pi\sqrt{2}$$
   • $$4\pi$$
   • $$4\pi\sqrt{3}$$

6. Line m contains the points $$(2,8)$$ and $$(-4,2)$$. Line n is perpendicular to line m. What is the slope of line n if its y-intercept is 5?

   • -1
   • $$\frac{1}{2}$$
   • $$-\frac{1}{2}$$
   • 1

7. From an airport, a helicopter flies to the roof of a skyscraper. The skyscraper is 125 miles due west and 35 miles due south of the airport. To the nearest mile, how far is the skyscraper from the airport?

   • 130
   • 169
   • 125
   • 156

8. Which of the following transformations when applied to the graph of the parent function $$y=x^3$$ produces the graph of $$y=(x+4)^3$$?

   • A vertical translation to the left 4 units.
   • A horizontal translation to the left 4 units.
   • A vertical translation to the right 4 units.
   • A horizontal translation to the right 4 units.

9. What is the period for the graph of $$y=3\tan(2x)$$?

   • $$\frac{2\pi}{3}$$
   • $$\frac{\pi}{2}$$
   • $$2\pi$$
   • $$\pi$$

10. In the figure below, lines $$l$$ and $$m$$ are parallel and line $$n$$ is a transversal. What is the sum of angles in degrees of $$x$$ and $$y$$?

    • $$180^\circ$$
    • $$100^\circ$$
    • $$120^\circ$$
    • $$150^\circ$$