Hobart & William Smith Colleges Algebra Question

Solve and complete. I need help with these algebra 2 review questions! Questions and answer choices are in the attached files!

X Brook Singleton’s Home Pa: X ALG II B 2522: Semester X
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A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=&idLesson=&page=1&idWebuser=3105908&i . ☆
Lesson 2: Semester B Exam
ALG II B 2522 Unit 8: Semester B Review and Exam
Assessment
00.389
The test scores for a math class are shown below.
81, 84, 82, 93, 81, 85, 95, 89, 86, 94
с
o
IR
30. What are the mean, median and mode of the data set? (1 point)
O mean: 87.5; median: 85.5; mode: 81
O mean: 87, median: 85.5; mode: 81
O mean: 85.5; median: 87, mode: 81
O mean: 87.2; median: 85; mode: 81
The test scores for a math class are shown below.
81, 84, 82, 93, 81, 85, 95, 89, 86, 94
31. What is the standard deviation of the data set? Round your answer to the nearest tenth. (1 point)
4.9
05.5
05.3
05.1
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X Brook Singleton’s Home Pa X ALG II B 2522: Semester X
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х
0
A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=&idLesson=&page=1&idWebuser=3105908&i ☆
Lesson 2: Semester B Exam
ALG II B 2522 Unit 8: Semester B Review and Exam
Assessment
(1 point)
32. Amanda surveyed 20 juniors and seniors at Delamar High School to find the number of hours
per week they spend working at part-time jobs. Her results are shown below.
Juniors: 20, 10, 20, 10, 15, 0, 0, 10, 20, 15
Seniors: 20, 20, 10, 10, 0, 0, 0, 10, 0,10
Which statement about the data is true?
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The range of hours worked is the same for juniors and seniors.
The mean, median, and mode for the juniors surveyed fall within a 3-hour range.
The mean number of hours worked by the seniors surveyed is 12.
The mean number of hours worked is the same for juniors and seniors.
33. Stillwater Junior High divides students into teams taught by a group of teachers. The table
shows the number of students in each team.
(1 point)
Team
Number of Students
Acers
78
Blazers
80
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X Brook Singleton’s Home Pa X ALG II B 2522: Semester X
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х
0
A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=&idLesson=&page=1&idWebuser=3105908&i ☆
Lesson 2: Semester B Exam
ALG II B 2522 Unit 8: Semester B Review and Exam
Assessment
35. The numbers of cookies in a shipment of bags are normally distributed, with a mean of 64 and (1 point)
a standard deviation of 4. What percent of bags of cookies will contain between 64 and 68
cookies?
O 17%
O 68%
O 47.5%
O 34%
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36. Find the period and the amplitude of the periodic function. (1 point)
y=-3 cos 4x
1
period = 31, amplitude =
2
O period = amplitude =-3
2
O period = 1, amplitude = 3
2
1
period = 3, amplitude =
2
37. Find the exact value of cos 300°. (1 point)
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x Brook Singleton’s Home Pa X ALG II B 2522: Semester X
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х
0
A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=&idLesson=&page=1&idWebuser=3105908&i ☆
Lesson 2: Semester B Exam
ALG II B 2522 Unit 8: Semester B Review and Exam
Assessment
40
Which cosine function has maximum of 0.5, a minimum of -0.5, and a period of 27 (1 point)
3
lo
20
Oy=cos
Oy= 2 cos 30
Oy=2 cos
3
Oy=0.5 cos 30
41.
51, (1 point)
What is tan ?
6
E
V3
V3
O
3
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X Brook Singleton’s Home Pa X ALG II B 2522: Semester X
+
х
0
A https://www.connexus.com/content/chrome/online/lessonViewer.aspx?header=true&idCourse=79475&idUnit=&idLesson=&page=1&idWebuser=3105908&i ☆
Lesson 2: Semester B Exam
ALG II B 2522 Unit 8: Semester B Review and Exam
Assessment
(1 point)
43. A beam rests against a wall, forming a 65º with the floor. Use the function y = 9 sec 0 to find
the length of the beam to the nearest tenth of a foot.
O 8.2 ft
O21.3 ft
09.9 ft
O 18.7 ft
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(1 point)
44. Which is the degree measure of an angle whose tangent is 3.73? Round the answer to the
nearest whole number.
O 150
0750
O-15°
0-759
45. Simplify the trigonometric expression. (1 point)
sin
1-cosa
01+cos e
O sin e
1-sina
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