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22. Thirty percent of the high school is involved in athletics. If 15 percent of the athletes play football, what percentage of the whole school plays football? A. 4.5 percent C. 15 percent B. 9.0 percent D. 30 percent

22. Thirty percent of the high school is involved in athletics. If 15 percent of the athletes play football, what percentage of the whole school plays football? A. 4.5 percent C. 15 percent B. 9.0 percent D. 30 percent

Trigonometry (11th Edition)
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE: 1. Give the measures of the complement and the supplement of an angle measuring 35°.
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22. Thirty percent of the high school is involved in athletics. If 15 percent of the athletes play football, what percentage of the whole school plays football? A. 4.5 percent C. 15 percent B. 9.0 percent D. 30 percent 23. Describe the locus represented by Iz + 2i| + |z - 211 = 6. A. circle B. parabola 24. If the average value of a periodic function over one period is zero and it consists of only odd harmonics, then it must be possessing A. 455п B. 625п A. half-wave B. even quarter-wave D. odd C. odd quarter-wave 25. A chord is 40 cm long and its midpoint is 40 cm from the midpoint of the longer arc. Find the area of the circle. C. ellipse D. hyperbola A. 27m B. 30m 26. A university mathematics department has 10 professors and will offer 20 different courses next semester. Each professor will be assigned to teach exactly 2 of the course, and each course will have exactly have one professor assigned to teach it. If any professor can be assigned to teach any course, how many different complete assignments of the 10 professors to the 20 courses are possible? C. 568n D. 25п A. 20/210 C. 1020 - 210 D. 1020 100 B. 101/29 27. Given a triangle, C = 100 degrees, a = 15m, b = 20m. Find c. A. a circle B. 28. Dave is 46 years old, twice as old as Rave. How old is Rave? A. 30 B. 28 an ellipse 3 of 5 C. 24m D. 32m C. 23 D. 18 29. if dy/dx = tanx, then y = A. (1/2) tan2x + C B. sec2x + C C. 1n| sec x + C D. 1n cos x + C 30. REE-April 2019. What was the marked price of a shirt that sells at P225 after a discount of 25 percent? A. P280 C. P300 B. P320 D. P340 31. REE-April 2019. If the orbit of a satellite has the polar equation r(2 + cose) = 4, then the path of the orbit is C. a parabola D. a hyperbola 32. Determine B such that 3x + 2y -7=0 is perpendicular to 2x By +2=0
Transcribed Image Text:22. Thirty percent of the high school is involved in athletics. If 15 percent of the athletes play football, what percentage of the whole school plays football? A. 4.5 percent C. 15 percent B. 9.0 percent D. 30 percent 23. Describe the locus represented by Iz + 2i| + |z - 211 = 6. A. circle B. parabola 24. If the average value of a periodic function over one period is zero and it consists of only odd harmonics, then it must be possessing A. 455п B. 625п A. half-wave B. even quarter-wave D. odd C. odd quarter-wave 25. A chord is 40 cm long and its midpoint is 40 cm from the midpoint of the longer arc. Find the area of the circle. C. ellipse D. hyperbola A. 27m B. 30m 26. A university mathematics department has 10 professors and will offer 20 different courses next semester. Each professor will be assigned to teach exactly 2 of the course, and each course will have exactly have one professor assigned to teach it. If any professor can be assigned to teach any course, how many different complete assignments of the 10 professors to the 20 courses are possible? C. 568n D. 25п A. 20/210 C. 1020 - 210 D. 1020 100 B. 101/29 27. Given a triangle, C = 100 degrees, a = 15m, b = 20m. Find c. A. a circle B. 28. Dave is 46 years old, twice as old as Rave. How old is Rave? A. 30 B. 28 an ellipse 3 of 5 C. 24m D. 32m C. 23 D. 18 29. if dy/dx = tanx, then y = A. (1/2) tan2x + C B. sec2x + C C. 1n| sec x + C D. 1n cos x + C 30. REE-April 2019. What was the marked price of a shirt that sells at P225 after a discount of 25 percent? A. P280 C. P300 B. P320 D. P340 31. REE-April 2019. If the orbit of a satellite has the polar equation r(2 + cose) = 4, then the path of the orbit is C. a parabola D. a hyperbola 32. Determine B such that 3x + 2y -7=0 is perpendicular to 2x By +2=0
A. 5 cm B. 12 cm 10. Find the second derivative of xlnx. C. 13 cm D. 24 cm A. X B. 1/x. C. 1 D. x^2 11. A car travels 90 kph. What is its speed in meter per second? A. 43 B. 30 12. Describe and graph the locus A. Circle B. Parabola 13. Sofia and Tess will each randomly choose one of the 10 integers from 1 to 10. What is the probability that neither integer chosen will be the square of the other. C. 0.81 D. 0.95 C. 25 D. 50 represented by Im{z^2}=4 Hyperbola C. D. Ellipse A. 0.64 B. 0.72 14. Totoy is 5 feet 11 inches tall and Nancy is 6 feet 5 inches tall. How much taller is Nancy than Totoy? A. 1 foot 7 inches B. 1 foot C. 7 inches D. 6 inches 15. A man is paid P1,800 for each day he works and forfeits P300 for each day he is idle. If at the end of 40 days, he nets P53, 100, how many days was he idle? A. 6 C. 8 B. 7 D. 9 16.1im (cos3x 1)/x^2 as x approaches 0 A. 9/2 B. 3/2 17. Find the equation of one of the asymptote of the hyperbola x^2 - 4y^2 6x - 8y + 1 = 0. A. x - 2y - 5 = 0 B. x -2y + 5 = 0 D. x - 2y + 1 = 0 C. x - 2y - 1 =0 18. A parabola has its axis parallel to y-axis, one end of its latus rectum is at (9,6) and the vertex is at (5,4). Find the length of the latus rectum. A. 6 B. 12 19. Evaluate (cot (j0.78))^2 A. -0.426 B. 0.426 20. A coin is tossed three times. He got three heads from these tosses. What is the probability that he will again get a head in the fourth loss? A. 1/12 C. 1/2 B. 1/16 D. 1/4 21. How many inches are there in 34/3 yards? A. 126 C. 160 B. 120 D. 168 C. -3/2 D. -9/2 C. 10 D. 8 C. -2.347 D. 2.347
Transcribed Image Text:A. 5 cm B. 12 cm 10. Find the second derivative of xlnx. C. 13 cm D. 24 cm A. X B. 1/x. C. 1 D. x^2 11. A car travels 90 kph. What is its speed in meter per second? A. 43 B. 30 12. Describe and graph the locus A. Circle B. Parabola 13. Sofia and Tess will each randomly choose one of the 10 integers from 1 to 10. What is the probability that neither integer chosen will be the square of the other. C. 0.81 D. 0.95 C. 25 D. 50 represented by Im{z^2}=4 Hyperbola C. D. Ellipse A. 0.64 B. 0.72 14. Totoy is 5 feet 11 inches tall and Nancy is 6 feet 5 inches tall. How much taller is Nancy than Totoy? A. 1 foot 7 inches B. 1 foot C. 7 inches D. 6 inches 15. A man is paid P1,800 for each day he works and forfeits P300 for each day he is idle. If at the end of 40 days, he nets P53, 100, how many days was he idle? A. 6 C. 8 B. 7 D. 9 16.1im (cos3x 1)/x^2 as x approaches 0 A. 9/2 B. 3/2 17. Find the equation of one of the asymptote of the hyperbola x^2 - 4y^2 6x - 8y + 1 = 0. A. x - 2y - 5 = 0 B. x -2y + 5 = 0 D. x - 2y + 1 = 0 C. x - 2y - 1 =0 18. A parabola has its axis parallel to y-axis, one end of its latus rectum is at (9,6) and the vertex is at (5,4). Find the length of the latus rectum. A. 6 B. 12 19. Evaluate (cot (j0.78))^2 A. -0.426 B. 0.426 20. A coin is tossed three times. He got three heads from these tosses. What is the probability that he will again get a head in the fourth loss? A. 1/12 C. 1/2 B. 1/16 D. 1/4 21. How many inches are there in 34/3 yards? A. 126 C. 160 B. 120 D. 168 C. -3/2 D. -9/2 C. 10 D. 8 C. -2.347 D. 2.347
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