Timed Mini Exam 23 — Timed Mini Exams

Questions in this quiz (10)

1. The height of the parallelogram below is 4.5 cm and the area is 36 square cm. Find the length of side QR in centimeters.

   • 9
   • 12
   • 18
   • 8

2. The sum of 2 positive numbers is 151. The lesser number is 19 more than the square root of the greater number. What is the value of the greater number minus the lesser number?

   • 121
   • 66
   • 91
   • 30

3. If $$81^{a+b}=1^c$$, which of the following is true?

   • $$b=c-a$$
   • $$4a=-4b+c$$
   • $$a=-b$$
   • $$a+b=-c$$

4. What day is it $$4359$$ days from Thursday?

   • Saturday
   • Friday
   • Tuesday.
   • Wednesday

5. What is the value of $$(2-4i)÷(3+i)$$?Note: $$i^2 = -1$$

   • $$\frac{1}{5}-\frac{7i}{5}$$
   • $$5+\frac{i}{5}$$
   • $$1+5i$$
   • $$\frac{1}{2}-\frac{5i}{2}$$

6. An arithmetic sequence has 2401 terms. What is the difference between the mean and the median?

   • 10
   • 150
   • 350
   • 0

7. The ratio of a to b is 6 to 7, and the ratio of b to c is 14 to 9. What is the value of $$\frac{3a-2b}{c-a}$$?

   • $$\frac{2}{3}$$
   • $$-\frac{3}{2}$$
   • $$\frac{6}{7}$$
   • $$-\frac{8}{3}$$

8. Counting repeated factors, how many prime factors are there in the prime factorization of $$(36)^5$$?

   • 5
   • 10
   • 15
   • 20

9. The graph of $$y=4x^5+9x^3+x$$ is in the standard $$(x,y)$$ coordinate plane. Which of the following transformations, when applied to $$y$$, could result in the graph of $$y=-4x^5-9x^3-x$$?I. Reflection about the y-axisII. Reflection about the x-axisIII. Reflection about the origin

   • I, II
   • II
   • III
   • I, III

10. For what diameter value does a circle have the same value for circumference and area?

    • 4
    • 6
    • 3
    • 5