2022年河南省南阳市内乡县九年级中招三模数学试题（含答案）.rar

1、内乡县 2022 年中招三模考试数学试题参考答案一、选择题(共 10 小题,满分 30 分,每小题 3 分)14C 24C 34A 44D 54B 64B 74B 84C 94D 104C二、填空题(共 5 小题,满分 15 分,每小题 3 分)114 124y=x+24答案4444 1344 144 154384x 3626三、解答题(共 8 小题,满分 75 分)16.(10 分)44(1)4tan601112|13 |3444444 =2+14434.3 分333444444 =424.5 分4(2)2221211aaaaaa4.1 分2(1)(1)2(1)(1)11aa aaaaaa4

2、.2 分2111aaaaa4.4 分111(1)aaaa a44.5 分1a17.(9 分)(1)100491.2 分4(2)444.3 分1094803043044444参4444444试4 480 4学4中444444学444 304 44.5 分4(3)4444444444444444444444数4中4数44数444444444444444444444444444444444444.9 分18.(9 分)(1)444 A4144444中444444k44kyx31k44444数44444.4 分xy44(2)4 A41444444444 ABCD 4444 44OB=1OC=OB+BC

3、=4+1=54 E454m44 E454m444中4444 E4544 4xy454m54BCE 4444BCCE44 4.9 42121545819.(9 分)解：4444 A 444 B 444444444444444 D 4444 AD 44C 44444444 E 444444 AE 444444444444 C 444444 A4444444444 F44 AFBDCE4/4ABD = BAF4 ACE = CAF4 AEC = ADB = 904.1 分44题4444BAF = 11.34CAF = 1444ABD = 11.34ACE = 14444 AE= x 444 AD =

4、 4x 410444.3 分44 RtAEC 中4 tan ACE = 4AECE4CE =444.5 分4tantan140.25AExxxACE44444444 315 444BD44x4315444 4.6 分44 RtABD 中4tanABD4 ADBD4tan 11.3= 44104315xx100.24315xx4444x436544444x4365 444444444题44.8 分444444444 C 44444 365 44.9 分20.(9 分)(1)44 14444444444444444444444444444 2444444444444.2 分4(2)44444内44

5、44ABQPO44180PADPQB 44180PDAPDB44PDBPQB 444BPBP44()PDBPQB AAS4444.5 分BQBD4(3)4ACCDPCABPAPDPADPDA =4PQPA4PQPA4PQPD4PDQPQD 444444内4444ABQPO4180PADPQB 444180PADPQDDQB 44180PDAPDQQDB 44DQBQDB 44.9 分BQBD21.(9 分)解：(1)4444444444444x4题4444.2 分25 13.2x444444444444题44 410.2x 21.8x 44题444444.3 分10.220%x 答444444

6、444444 20%4.4 分(2)44444444444444案444444444案4444444y1w2w4案444.5 分18300 3.23.23002.5619210wyy4案444.6 分23.20.42.8wyy4444412ww2.561922.8yy800y 4444412ww2.561922.8yy800y 44444.8 分12ww2.561922.8yy800y 答4444444444 300 44444 800 44444案4444444444444 800 4444444案44444444444444 800 44444案4444.9 分22.(10 分)(1)44

7、444444440 x 2x 3y 444440212x4444441, 44444数44444214ya x444中4444440, 3214ya x43a 1a 444444444.3 分214yx(2)4数4444214yx444444444441x 44444444数4444414,Ay22,B xy44444数444444444424y 24x 444412yy224x 4答案44.6 分224x (3)444444444444 M 440b yxb 430b 43b 44 MN 4444444444443b 444444444444440b yxb 1,044 10b 1b 444

8、444444yxb 0, 303b 444 MN 444444444443b 44444444.10 分31b 31b 3b 23.(10 分)(1)ABC 4CDE 444三444BC4AC4CE4CD4BCA=60444 20BCE4ACD4204CBECAD4SAS4 4BE4AD444三444444444 4BCA4BCEECA60420=40ECA4答案44404BE4AD.4 分(2)44 14414中444444444444ABC 4CDE 444三444BC4AC4CE4CD4BCE4ACD41204CBECAD4SAS4 4BE4AD4.7 分CBECAD4CBE4CAD44

9、AOP4BOC4APB4ACB4604(3)44 244 D 444 D1或D244 BCD1D2SBCD最大12BC CDab4444444 60+9041504124 36030433044 41504 3304.10 分内乡县 2022 年中招三模考试AAAA试AA一、选择题(AAA 3 A,A 30 A)AAAAAAAAAAA,A中AAAAAAAA.1.AAAA中,AAAAAAAAAA. B.A2C.A3D.042.2022 年 1 A 20 A,AAAAAAAA 2021 年AAAAAAAA.AAAA,AAAAAAAAAAAAAA,2021 年AAAAAAAA 58887.41 AA

10、,AAAAAAA,AAAA 6.3%.A年AAAA 3.6%,A中AAAAA三AAAAAAAA 5620.82 AAA24331.65 AAA28934.93 AA,AAAAAA 6.4%A4.1%A8.1%.AAA 5620.82 AAAAAAAAAAAA.56.2082108B.56.20821010AC.5.620821011D.0.56208210123.AAAAAAAAAAAAAAAAAAAAAAAA,A三AA中AAAAAAAA.AAAB.AAAAC.AAAD.AAA4.AAAAAAAAAA.B.22416aa3412aaaAC.D.44aa 333725xxx5.AA,AAAAAA

11、 H,CHE=15,A ABCD,EFCD75HABAAAAAAHFAA.95 B.90AC.85 D.806.AA,AAA ABCD AAA,EAF AAA BCACD AAAAA,AAAAAA,AAAAABEADF AAAA.ECAFC B.AEAAFAC.BAFADAE D.BEADF7.AAAAAAA x24x+4m=0 AAAAAAAAA,AAAAAA y=(m+2)x AAAAAAAAAAA.AAAAAA B.AAA三AAAC.AAAAAA D.A三AAAA8.AAAAAAAAAAAAAAA:A 5 AAAAAAAAAAAAAAAAAAAA三AAAAAAAAAAAA(AAAAAAA

12、AAAAAAA),AAAAAAAAA,A中AAAA 2 A,AAAAAAAAA中AAAAA,AAAAA.AAAAAAAAAAAA.B.C.D.152535459.AA,AAA中,AA A,B,AAAAA,A A(0,1), ABCDCD,AAAA A,AAA,AAAAAAAA,60ABCDADAAAAA,AA,.AAAAEAD AAAEEAEDABCDAAAAAAAAA,AAAA 45,AA 2022 AAAAAOA,AAAAA2022EAA.B.3, 23,2AC.D.2,32,310.AA 1,AA中,AAA中A,A P AAA B AAAA,A B,P AAAAAABCDEBCBCCAA

13、,A 2 AA P AAAAAAAAAAA,AAAAxPAPEyyxBCAA.B.C.D.4567二、填空题(AAA 3 A,A 15 A)11.AA中AAA x AAAAAA_.54yx12.AAAAAAA y AAAAAAAAAA_.0,213.AAAAAAAAAAAAAAAAAAAAAA考试AAAAAAAAA:AAAAA:AAAAAAA93969693AA2()s5.14.91.21.0 AAAAAAAAAAAAAAAAAAAAAA,AAAA_AAAAAAAAA中AAAAA.14.AA,O 中,AAA ABA12,CAD AO AAA,AAAAAAA AB AAA,C AA AB A中A

14、,BCDA15,AA中AAAAAAAA_.AAAAAAAA A AAAAAAAAAA 14 AAAAAAAAAAAAAAAA 15 AA15.AA,AAA中,AAAAAAAAAAA,A,AABCD6AB 8BC EFABBC4EF AA中A,AAA,AAAAAAAAAAA_.GEFAGCGAGCD三、解答题(AAAA 8 AAA,A 75 A)16.(AAA 5 A,A 10 A)AA1AAA:Atan60 A2AAA:.1112|13 |32221211aaaaaa17.(9 A)A年A中AAAAAA年AAA 100 A年,AAAAAAA年A 480 AAAAAAAAAAAAAA,AAAAA

15、AAAAAAA试.AAAAAAAAAAA 15 AAAAA试AAAAA 100 AAAAAAAA,AAAA:AAAAAAAAAAAAAA 15 AAAA试AAAAA:78,83,89,97,98,85,100,94,87,90,93,92,99,95,100.AA 15 AAAA试AA中AAAAA:91,92,94,90,93.9095xAAAAAAAAAAAAAA7580 x8085x8590 x9095x95100 xA11346A12354AAAAAAAAAAAAAAAAAAA中AAAAA92a9347.3A9087b50.2AAAAAAAAAAAA(1)AAAAAA,AAAA:aA_A

16、,bA_AA(2)AAAA试AA 90 AAAAAAA,AAAAAAAA试A 480 AAA中AAAAAAAAAAA(3)AAAAAA,AAAAAAAAA试AAAAAAAAAAAAAAAAAAAAAA.18.(9 A)AA,AAAAAAA中,AAA ABCD AAA B,C A x AA,AAAAAAx0AAAAAAA AA1,4A,A CD AAkyxE.(1)AAAAAAAAAAA;(2)ABCE AAA.19.(9 A)AAAAAAAA“AA”AAAAAAAA,AAAAAAAAAA.AA,AAA 15 AAAAAAAAA A AAAAA,AAA A AAAAAA B AAAA 11.3,

17、AA C AAAA14,AAAAAAAA 315 AA B A C AA 10 A,AAAAAAAA C AAAAA考AA:sin11.3=0. 22, sin14=0. 24,tan11.3=0.2, tan14 =0.25A20.(9 A)AAAA考AAAA考A AAAAAAA,AAAAAAAAAAA.A AAAAAAAAAAAAAAAAAAAAAA,AAAAAAAAAA三AAAAA.AAAAAAAAAAAAAAAAAA中AAAAAAA 15 AAA,A中A三AAAA:AA 1,AAA,A P AA,AA,AAAAA,AAABOOPCABCDABACCDPBAAA,A,AA,A.AAA考A

18、,AAAAAA:QPQPABQBQBDAA 2,AA APAAPQABP.PD,ACCDPCABPA=PDAAA 1APADPDA PQPAAAA 2AQBPABP AA:(1)AAAAAAAA中AAA:AAA 1:_AAA 2:_A(2)AAAAAAAAAAAAAAAA(3)AAAAAAAAAAAA:AA 3,AA APAAA.PDPQDQAAAAAAAAAAAAA,AAAAAA.21.(9 A)AAAAAAAAAAAA 5 AAAAAAAAAAAA.AAAAAA,AAAAAA,AAAAAAA,AAAAAA 3.2 A.A(1)AAAAAAAAAAAAA(2)AAAAAAAAAAAAAAAA

19、AAAAAAA 300 AAA,AAAAAAA,AAAAAAA 3.2 AAAAAAAAAAAAAAAA:AAAAA:AAA 300 AAAAAAAA,AA 300 AAAAAAAAAAAAAA:AAAAA 0.4 A.AAAAAAAAAAAAAAA,AAAAAAAAAAAA.22.(10 A)AAAAAAAA xOy 中,AAAAAAAAAAAAAA,AAA x AAAA y AAAAAAAA:xA2A1012y50343A(1)AAAAAAAAAAAAA(2)AAAAAAAAAAAAA,A,A x2AAAAAA_A14,Ay22,B xy12yyA(3)AAAA x AAy AAAAAA

20、M AA N,AA MN AAAAAAAAAAAyxb AAA,AAAA b AAAAA.23.(10 A)A 1 AAAAAAAAAAAA三AAAAABC AAAAAAab abCDEAAAAAAAAA.CC(1)AA:AAABC,AAA C AAAAAAAA 20,AA AD,BE,AA 2,ACDEA_A,AAAAAAA BE A AD AAAAA_.ECA(2)AA:AAA 1 中A,AA C AAAAAAAA 120,AA BACAD AAAAACDEAAA,AA ADABE,AA 3.AA BE A AD AAAAAAA(1)中AAAAAA,AAAAAAA,AAAAA BEA AD AAAAAAAAAAAA.APB(3)AAA 1 中A,AA C AAAAAAAAAAA,AAAAACDEA0360AA,AAAAAAAAAAAAA.BCD