Math126 Week 3 Quiz
Date Taken: 3/7/2013 Time Spent: 2 h , 11 min , 30 secs Points Received: 20 / 20 (100%) Question Type: # Of Questions: # Correct: Multiple Choice 20 20 Grade Details – All Questions 1. Question : The difference between the ages of two friends is 37 years. The sum of their ages is 55 years.
or any similar topic only for you
Find the age of the older friend. Student Answer: 46 9 47 45 Instructor Explanation: See section 8. 2 of the textbook. Points Received: 1 of 1 Comments: 2. Question : Which of the following is not a way to name the angle shown? Student Answer: Instructor Explanation: See section 10. 1 of the textbook. Points Received: 1 of 1
Comments: 3. Question : The triangles in the figure below are similar. Use the proportional property of similar triangles to find the measure of x. Student Answer: 34. 2 km 29. 2 km 25. 2 km 19. 2 km Instructor Explanation: See section 10. 2 of the textbook. Points Received: 1 of 1 Comments: 4. Question : Determine whether or not the network is traversable. Student Answer: No, it is not traversable. Yes, it is traversable. Instructor Explanation: See section 10. 7 of the textbook. Points Received: 1 of 1 Comments: 5. Question : Find the slope of the line passing through the points (0, -4) and (-6, 7).
Student Answer: 11/6 -11/6 -6/11 6/11 Instructor Explanation: See section 8. 1 of the textbook. Points Received: 1 of 1 Comments: 6. Question : Identify angles 2 and 7 as alternate interior, alternate exterior, corresponding, or vertical. Student Answer: Alternate exterior Vertical Alternate interior Corresponding Instructor Explanation: See section 10. 1 of the textbook. Points Received: 1 of 1 Comments: 7. Question : Classify the triangle according to sides. Student Answer: Scalene Isosceles Equilateral Instructor Explanation: See section 10. 2 of the textbook. Points Received: 1 of 1 Comments: 8.
Question : Find the vertex of the parabola. y = -2×2 + 12x – 13 Student Answer: (5, -3) (-3, 5) (3, 5) (5, 3) Instructor Explanation: See section 8. 5 of the textbook. Points Received: 1 of 1 Comments: 9. Question : What is the definition of sin A for the following triangle? Student Answer: Instructor Explanation: See section 10. 6 of the textbook. Points Received: 1 of 1 Comments: 10. Question : A tent is shaped like a pyramid. It has a square base measuring 8 feet on a side and a height of 6 feet. What is the volume of the tent? Student Answer: 512 ft3 128 ft3 16 ft3 32 ft3 Instructor Explanation: See section 10. of the textbook. Points Received: 1 of 1 Comments: 11. Question : Find the measure of the supplement of 58°. Student Answer: 32° 148° 302° 122° Instructor Explanation: See section 10. 1 of the textbook. Points Received: 1 of 1 Comments: 12. Question : Evaluate the function f(x) = -x2 + 5 for x = 4. Student Answer: -9 -10 -12 -11 Instructor Explanation: See section 8. 5 of the textbook. Points Received: 1 of 1 Comments: 13. Question : The difference between the ages of two friends is 2 years. The sum of their ages is 74 years. Find the age of the older friend. Student Answer: 38 36 39 37
Instructor Explanation: See section 8. 2 of the textbook. Points Received: 1 of 1 Comments: 14. Question : Find the slope of the line passing through the points (-3, -10) and (4, 5). Student Answer: -15/7 -7/15 15/7 7/15 Instructor Explanation: See section 8. 1 of the textbook. Points Received: 1 of 1 Comments: 15. Question : Classify the angle as acute, right, obtuse, or straight. Student Answer: Obtuse Right Straight Acute Instructor Explanation: See section 10. 1 of the textbook. Points Received: 1 of 1 Comments: 16. Question : Identify angles 4 and 5 as alternate interior, alternate exterior, corresponding, or vertical.
Student Answer: Corresponding Alternate interior Vertical Alternate exterior Instructor Explanation: See section 10. 1 of the textbook. Points Received: 1 of 1 Comments: 17. Question : Determine whether or not the network is traversable. Student Answer: No, it is not traversable. Yes, it is traversable. Instructor Explanation: See section 10. 7 of the textbook. Points Received: 1 of 1 Comments: 18. Question : Determine whether the system is consistent, inconsistent, or dependent. 3x + 2y = 15 6x + 4y = 30 Student Answer: Consistent Dependent Inconsistent Instructor Explanation: See section 8. of the textbook. Points Received: 1 of 1 Comments: 19. Question : Determine whether or not the relation is a function. {(1, 9), (2, 10), (3, 11), (4, 12)} Student Answer: No Yes Instructor Explanation: See section 8. 5 of the textbook. Points Received: 1 of 1 Comments: 20. Question : Determine whether the system is consistent, inconsistent, or dependent. 3x – 3y = -9 9x – 9y = -27 Student Answer: Consistent Dependent Inconsistant Instructor Explanation: See section 8. 2 of the textbook. Points Received: 1 of 1 Comments: * Times are displayed in (GMT-07:00) Mountain Time (US & Canada)