advertisement

ALGEBRA 2/TRIGONOMETRY The University of the State of New York REGENTS HIGH SCHOOL EXAMINATION ALGEBRA 2/TRIGONOMETRY Friday, June 14, 2013- 1:15 to 4:15p.m., only Student Name: School jV} (: ~\ b{> ) Name:_-~~--~-Ji~~-f{J~~A:~p~---:~~-~~----~~--~~--~~~~~~~~~~~ The possession or use of any communications device is strictly prohibited when taking this examination. If you have or use any communications device, no matter how briefly, your examination will be invalidated and no score will be calculated for you. Print your name and the name of your school on the lines above. A separate answer sheet for Part I has been provided to you. Follow the instructions from the proctor for completing the student information on your answer sheet. This examination has four parts, with a total of 39 questions. You must answer all questions in this examination. Record your answers to the Part I multiple-choice questions on the separate answer sheet. Write your answers to the questions in Parts II, III, and IV directly in this booklet. All work should be written in pen, except for graphs and drawings, which should be done in pencil. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. The formulas that you may need to answer some questions in this examination are found at the end of the examination. This sheet is perforated so you may remove it from this booklet. Scrap paper is not permitted for any part of this examination, but you may use the blank spaces in this booklet as scrap paper. A perforated sheet of scrap graph paper is provided at the end of this booklet for any question for which graphing may be helpful but is not required. You may remove this sheet from this booklet. Any work done on this sheet of scrap graph paper will not be scored. When you have completed the examination, you must sign the statement printed at the end of the answer sheet, indicating that you had no unlawful knowledge of the questions or answers prior to the examination and that you have neither given nor received assistance in answering any of the questions during the examination. Your answer sheet cannot be accepted if you fail to sign this declaration. Notice ... A graphing calculator and a straightedge (ruler) must be available for you to use while taking this examination. DO NOT OPEN miS EXAMINATION BOOKLET UNTIL mE SIGNAL IS GIVEN. Atll.3IAION08U::IlJG Vti8381V Part I Answer all 27 questions in this part. Each correct answer will receive 2 credits. For each statement or question, choose the word or expression that, of those given, best completes the statement or answers the question. Record your answers on your separate answer sheet. [54] 1 A market research firm needs to collect data on viewer preferences for local news programming in Buffalo. Which method of data collection is most appropriate? (3) observation (4) controlled experiment (I) census @survey 2 What is the number of degrees in an angle whose radian measure . 8:rt? ISS' (1) 576 (3) 225 @288 (4) 113 3 Which diagram represents a relation that is both one-to-one and onto? (I) (3) (2) Algebra 2/frigonometry- June '13 [2] Use this space for computations. 4 The sum of the first eight tenus of the series 3 - 12 + 48 - 192 + (I) -13,107 (Th -39,321 (2) -21,845 (4) -65,535 c:• 1Yl ':" Use this space for . )computations. ... is .9..z ( I _, r '' • . 1... r .. )o ~ } { J - ( . tij_tj ,; -J9J 3J--/ I -(,.tt) . x~-9x xc~ ;$ y·l-- 1-_! 5 The simplest form of - 2 --'x'-'--8- is 1. . . - - - v_·~ 1- - · - x x2 (1) .l 4. "'" # .,.- xJ--Jx-8' ;, .r _ c. . .~ (~1ju+~) ".x+v (3) -~ 2 X @x:2 (4) - - X- 2 6 Which equation represents the graph below? y ( 1) y = -2 sin 2x (2) y = -2sinlx 2 Algebra 2ffrigonometry - June '13 @ y = -2cos2x (4) y = -2 cos lx 2 [3] [OVER] 7 \Vhat is the graph of the solution set of l2x - ll > 5? Ill( I( I 0 -2 0 I -3 I I 0 0 (2) I I 0 • 0 3 @ -2 II( I 0 0 I I I I I I I 0 I -3 I 0 I. Y/) • 0 3 0 -/ '> ). J-x>£ 3 (3) I( I d~X I I. 3 (4) 8 What is the range of the function shown below? y 0 @Jy<O (2) X> 0 (4) y > 0 (1) X< Algebra 2ffrlgonometry- June '13 [4] Use this space for computations. L--S -y J_y )x- J £_ xL-.-L 9 The expression sin(8 (1) -sin 8 + 90) is equivalent to 9{ sin 8 1Y1 W cos 8 (2) -cos 8 Use this space for computations. ra )ih . . j' 0 {!J 1~0 ') s;h GJ r.:t;syo rt. ·:. ")liJ GJ (o) t (j>S () Cl) 0/ > {:-' • }r "' (l 10 The points (2,3), (4, ~ ), and (6,d) lie on the graph of a function. If y is inversely proportional to the square of x, what is the value of d? (1) 1 (3) 3 @1 (4) 27 ~·')_. 3 ~J JJ- J 11 In the right triangle shown below, what is the measure of angle S, to the nearest minute? (3) 61 °.56' (4) 61 °93' 12 \V .. hich. ordered pair is in the solution set of the system of equations shown below? t- ~· ( 1 3y) f y· y J- !/ - x2 + 32 = 0 3y- X= -o Y (1) (2,6) (.3) ( -1, -3) (2) (3,1) {j) (-6, -2) Algebra 2ffrigonometry- June '13 q y· 2V 0 X·? .. ' '3-(··1)~~ [5] . 'L .() :t .'/ ~· ,-_:; " ~ )--" _.( -s .J Y., -~Lf y ·: -t·-~ [OVER] 13 Susie invests $500 in an account that is compounded continuously at an annual interest rate of 5%, according to the formula A = Pert, where A is the amount accrued, P is the principal, r is the rate of interest, and tis the time, in years. Approximately how many y~ar~ will it take for Susie's money to double? J tJ(}() ~ ~ h J 3. 9 {'J In )- ~· .oS-1-: r /'""~ 14 If n is a negative integer, then which statement is always true? (2) .1! 4 @ 6n- < 4n- 1 > -6n - l 1 (4) 4n -I < 4n- 1 > (6n)- 1 .5 15 The expression 4 + 2: 3(k - x) is equal to k=2 (1) 58- 4x (2) 46 - 4x (3) .58- 12x @46- 12x 16 Which value of r represents data with a strong positive linear correlation between two variables? ~ 0.89 (2) 0.34 Algebra 2ffrigonometry- June '13 -' ~-~·~·I) (4) 14.7 (1) 6n- 2 ,('1 o() ?1n )- ./·. Jl/ ;r;-f: . (£) 13.9 (!) 1.4 (2) 6.o Use this space for computations. (3) 1.04 (4) 0.01 [6] ,{)£ Use this space for computations. 17 'Which problem involves evaluating 6P4 ? @How many different four-digit ID numbers can he formed using 1, 2, :3, 4, .S, and 6 \vithout repetition? (2) How many different subcommittees of four can he chosen from a committee having six mernbers? (:3) How many different outHts can be made using six shirts and four pairs of pants? (4) How many djfferent ways can one boy and one girl be selected from a group of four boys and six girls? 18 \¥hich equation is represented by the graph below? y (1) (x - 3) 2 (2) (x + 3) 2 (3) (x - 1) 2 @(x + 3) 2 + + + (y + 1) 2 (y - 1)2 (y + 3) 2 + (y- ll =5 =5 = 1;3 = 13 Algebra 2ffrigonometry- June '13 [7] [OVEH] 19 If x = 3i, y = 2i, and z = m + i, the expression xy 2zfquals @ (1) -12 - 12mi (2) -6- 6mi Use this space for computations. 0 (3 (J l) 1-(1'11-i) 12 - 12mi (4) 6- 6ml { 1 i)( 4/}· (I') f i) (3 0 (- 4) ( /'1 h) _.,.,)) j { f i) J ·2- 20 An angle, P, drawn in standard position, terminates in Quadrant II if (I) cos P < 0 and esc P < 0 @ esc P > 0 and cot P < 0 (2) sin P > 0 and cos P > 0 (4) tan P < 0 and sec P > 0 Pis f /f CJL fJt>5 ,·1::! veJ <?i I'J (11 "J-M ( -/ l -})-hi i f)}-- ..... ) i5 f onhuc.- (l MrHv-c rr -:;; h (l i ~ fo~rhvt} cos .Mv' 21 The expression log 4m is equivalent to /1 e~a_., tt ve.. If u+ f 1 k i> 2 @log 4 + 2log m (4) log I6 + 2log m (I) 2(log 4 +log m) (2) 2log 4 + log m lo<J4 -T I ofJ m l 22 In MQR, p equal! ~~ O + )--) D8 AI (I) r:!n; (3 ) rsinR sinP ~"\rsinP (4 ) qsinR ~ 23 If tan (Arc cos J3k ) = f sinQ J3 then k is 3 ' (I) I @)2 (3) .J2 ;<Jrc UJ> [£-= 30 (4) 3.J2 I< 13· / Cfos 3o --c- / k:~J- Algebra 2fl'rigonometry -June '13 [8] Use this space for computations. 2x-2 -2 24 Which expression is equivalent to 4 y ~5 ? QL (3) 2x2 2x 2 (2) 2y y3 3 2 (4) _x_ x2 2y3 25 Expressed with a rational denominator and in simplest form, A. x+4Y X x _ .[; is x -~ krt[( .r; (3) X+ 1-x (2) ~x+fx ~ x-1 -Fx 26 What is the common ratio of the sequence ..La5b3 _ _l__a3b4 _Sl__ab5 ? 64 ' 32 ' 16 (1) - 3b 2a 2 (3) @)- 6b a2 27 In l:.KLM, KL ' .... (4) 3a2 b 6a 2 b = 20, LM = 13, and mLK = 40. The measure of LM (1) must be between 0° and goo (2) must equal goo ~must be between goo and 180° @))is ambiguous fJ f Algebra 2/frigonometry - June '13 _fl.. , --;:Jh'fiJ" ;11 X lfo .!:!!..- )1)1 fl1 rI 99 ~~ f?(> (g] J q'f f'lft) dfO (OVER] Part II Answer all 8 questions in this part. Each correct answer will receive 2 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should he written in pen, except for graphs and drawings, which should he done in pencil. [ln] 28 Determine the sum and the product of the roots of the equation 12x 2 - I Algebra 2ffrigonometry- June '13 [10] +x- 6 = 0. 29 Solve algebraically for x: 51- lx -I ~ /-7 J-~--~ ?/ 3 'C )x -~ 8~ x· -'~ YJ Algebra 2/frlgonometry- June '13 [11] [OVER] 30 Find the number of possible different 10-letter arrangements using the letters of the word "STATISTICS." ;o! - ._ r ) ! )! J-/ 31 Express the product of cos 30° and sin 45° in simplest radical form. I 1[ (~) Algebra 2ffrigonometry -June '13 [12] 32 Find, algebraically, the measure of the obtuse angle, to the nearest degree, that satisfies the equation 5 esc 6 = 8. Algebra 2ffrigonometry- June '13 [13] [OVER] 33 If g(x) = (ax~t, express g(lO) in simplest form . . )_. cg(to) (/DAr/-t---IL7) > ; JDO o~'- (9) ~ -9 oO a Algebra 2trrigonometry- June '13 ).._ [14] 34 Express cotxsinx sec x as a single trigonornetric function, in simplest f(xm, for all values of x for which it is defined. ( O>X ~ - ·"' 5;)?Y_____ . I { C)S Algebra 2ffrigonometry- June '13 -/ L (os X A' [15] [OVER] 35 On a multiple-choice test, Abby randomly guesses on all seven questions. Each question has four choices. Find the probability, to the nearest thousandth, that Abby gets exactly three questions correct. Algebra 2ffrigonometry- June '13 [16] Part III Answer all 3 questions in this part. Each correct answer will receive 4 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. For all questions in this part, a correct numerical answer with no work shown will receive only 1 credit. All answers should be written in pen, except for graphs and drawings, which should be done in pencil. [12] 36 Solve the equation below algebraically, and express the result in simplest radical form: ~ 10 - x) } 1 ~ )0 X- X)._ )( { 1: X J-. ~ }L?Xf') 1 ;: Q o ifloo -if tJlJ 1 , . X ·-· )-/I) X -"" Joi~ ,,~ )-. jcJi ~ ~. J-f)i' ~13 Algebra 2/frigonometry- June '13 [17] [OVER] 37 A ranch in the Australian Outback is shaped like triangle ACE, with mLA = 42, mLE AC = 15 miles. Find the area of the ranch, to the nearest square mile. .. ("'' I) ~ Ct ,-. , v• ;· t. )1 /J d Algebra 2ffrigonometry- June '13 ·] [18] = 103, and 38 Ten te~ ~pe~)}L~..h~leading competition at a local high school. Their scores were 29, 28,®ty45,~(5!and 48. How many scores are within one population standard deviation from the mean? r[fi. >. 9 ~ )~.)_ - ~4. I For these data, what is the interquartile range? Algebra 2ffrigonometry - June '13 [19] [OVER] Part IV Answer the question in this part. A correct answer will receive 6 credits. Clearly indicate the necessary steps, including appropriate formula substitutions, diagrams, graphs, charts, etc. A correct numerical answer with no work shown will receive only 1 credit. The answer should he written in pen. [6] 39 Solve ahrebraicallv b ,/ for all values of x: x4 ~ + 4x'1 + 4x""° = - 16x y'1 flfx;, f Yy J-!}6:{ 0 xCx 5 tLfx1-14x-TJ6). 0 A' (xL(x+~) f t.;{xfLJY? (J ? x ( x~--1Lf) (x t~) ~ D 0 rA -~ ,..f· -, . -~··L Algebra 2ffrigonometry- June 'l:l [20j