Math 47
Quiz Summary
0 of 8 Questions completed
Questions:
Information
You have already completed the quiz before. Hence you can not start it again.
Quiz is loading…
You must sign in or sign up to start the quiz.
You must first complete the following:
Results
Results
0 of 8 Questions answered correctly
Your time:
Time has elapsed
You have reached 0 of 0 point(s), (0)
Earned Point(s): 0 of 0, (0)
0 Essay(s) Pending (Possible Point(s): 0)
Categories
- Not categorized 0%
- 1
- 2
- 3
- 4
- 5
- 6
- 7
- 8
- Current
- Review
- Answered
- Correct
- Incorrect
-
Question 1 of 8
1. Question
Question 1:
If a – b = 5 and c = 8a – 10 – 8b, then c = ?
CorrectIncorrect -
Question 2 of 8
2. Question
Question 2:
For x2 ≠ 49, (x – 7)²/(x² – 49) = ?
CorrectIncorrect -
Question 3 of 8
3. Question
Question 3:
At a time when the sun’s rays are striking the level ground at an angle of 37º, a tower casts a shadow that is 51 feet long, as shown in the figure. To the nearest foot, how many feet tall is the tower? (Note: sin 37º ≈ 0.60, cos 37º ≈ 0.80, tan 37º ≈ 0.75)
CorrectIncorrect -
Question 4 of 8
4. Question
Question 4:
The lengths of the sides of a triangle are 3, 8, and 9 inches. How many inches long is the shortest side of a similar triangle that has a perimeter of 120 inches?
CorrectIncorrect -
Question 5 of 8
5. Question
Question 5:
For all x > 0, 1/x – 2/3 = ?
CorrectIncorrect -
Question 6 of 8
6. Question
Question 6:
A function is defined by g(x) = -x5. Which of the following is an expression for g(g(x))?
CorrectIncorrect -
Question 7 of 8
7. Question
Question 7:
Greg sampled a group of random college seniors to see if they would rather have a rapper or a rock band for their spring fling concert. Of the 122 students surveyed, 42.8% responded that they would rather have a rapper. Based on this information, about how many students in the 845 senior class would rather have a rock band for the spring concert?
CorrectIncorrect -
Question 8 of 8
8. Question
Question 8:
The population of the town of Chappaqua increased from the years 1990 to 1999 by 8.40%. From 2000 to 2004, the towns population decreased by 3.30%. In the years 1990 to 2004, which percentage best represents the change in Chappaqua’s population?
CorrectIncorrect