2022-2023学年福建省莆田市八年级数学第一学期期末达标检测模拟试题含解析

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2022-2023
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16L60x+10000<80x+2000Mᓽx>400M⌱,ᫀefgh;(3)ᵬஹmᓫngh_opᳫrsἠᦪᑖuvawஹbw•.•ᵬஹmᓫnᑖuᵨ,ᫀB,ᫀ*gh_opᳫrsἠm.gh_opᳫrsἠᨵijGb<100ᡈb>100.জbWlOOMm.gh_opᳫrsἠv100b,a+Z?=700,”550,E¢£ᔠ⚪x,¤¥;60a+10000+100/?=58000,b=150,ঝLb>100Mm.gh_opᳫrsἠv80b+2000,a+b=700,a=500,E¢£ᔠ⚪x60஺+10000+80Z?+2000=58000,h=200,¨Gᵬஹmᓫngh_opᳫrsἠᑖuv50()wஹ200w.22ஹ(1)18(2)630ூᑖ᪆௃(1)ᵫ⚪x11ᨴ«¬j®¯Ḅ°±^xᐗ³⚪xᑡ9,µ¶9,µᓽ7(2)᪷<⚪x¬j®¯Ḅ°±vyᐗ¶ᑡ,µ8e89·¸¹12ᨴ«├°¬j®¯Ḅᑭ».ூF௃G(1)nᨴ«¬j®¯Ḅ°±^xᐗ³⚪x7ᑡ,µ18001800+630“------=-----------------50x0.9%E:x=18¼½¾x=18^,µḄ¿£ᔠ⚪x¨G·¸¹11ᨴ«¬j®¯Ḅ°±^18ᐗ.(2)¬j®¯Ḅ°±vyᐗ³⚪x7ᑡ,µ1800(18-y)x600EGy=12(18x0.9-12)x(100+50)=630(ᐗ)¨G12ᨴ«├°¬j®¯Ḅᑭ»^630ᐗ.ூQR௃_⚪ὃVᑖ,µḄÀᵨ"Xᐗo,µḄÀᵨ⚪Ḅᐵa^ÁÂÃᐵÄᑡ9ᑖ,µBÄᑡ9ᐗo,µ8.23ஹ1

17ூᑖ᪆௃ᑭᵨ+,᪷'Å+,᪷Æ89஺஻Ḅ3e89Ḅ3ᑭᵨÈ,᪷Æ&'ᓽ7893.ூF௃G᪷<⚪xEG8-a=5,b=W,EGcz=3,b=9,ᓽaZ?=27,27ḄÈ,᪷^1,ᓽ9?ḄÈ,᪷^1.ூQR௃S⚪ὃVWÈ,᪷+,᪷"X'Å+,᪷Z[\]ᔜÊḄÆ^_⚪Ḅᐵa.24ஹ(1)ËÌÍ᪆(2)¨ᫀÍ᪆(3)8ூ᪆௃(1)QAᑖuÎxÏyÏḄᚖÑᚖpᑖuvMஹN,ᑣAN=AM,᪷<ÒÓᦪḄឋÔ89aஹbḄ3ᓽ7EÕ(2)᝞×2,AÎAH+ᑖNOAB,ØBMÙQH,ᑣAOEgaBAH,7EAH=OE,ᵫÚÛᩩÝ7ÛON=AM,NMOE=NMAH,7EONE^AAMH,ZABH=ZOAE,BMNEØÙK,Þ(]ZMKN=1810-2ZONE=91°-ZNEA,ᓽ2NONE-ZNEA=91°(3)᝞×3,HÎHM_LOF,HN_LEFÙMஹN,7ËFMHàFNH,ᑣFM=FN,áᳮGNE=EK,ᐜE9OE+OF-EF=2HK,CᵫAPFg/kAQEEPF=EQ,ᓽ7EOE+OF=2OP=8,ÂÃ4ᣚᓽ7E2HK+EFḄ3.ூF௃G(1)V|a-b|+b2-8b+16=lA|a-b|+(b-4)2=1V|a-b|>l,(b-4)2>1.\|a-b|=l,(b-4)2=1.*.a=b=4QAᑖuÎxÏyÏḄᚖÑᚖpᑖuvMஹN,ᑣAN=AMAOA+ᑖNMONᓽOA^ã▲Ḅå+ᑖÑ(2)AÎAH+ᑖNOAB,ØBMÙQH.,.ZOAH=ZHAB=45°VBM±AE.\ZABH=ZOAEᙠAAOEBAHç

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20NZBOA=ZAHP=90°,(.AAQBgûPHA(AAS).).PH=AO=2,AH=OB=4.(.OH=AH-OA=2.ᦑPḄᙶ᪗(2,-2).HNABP=90°IKEPMLBMMᑣNMBP+NP3O=90஺ZPBO+ZOBA=90°,(.NOBA=4MBP.N,.•ZAP3=45஺ZABP=90°,(.ZAPB=ZBAP=45°,AB=PB,N•••NBQ4=NfiMP=90°,AAOBPAPMB(AAS).PM=AO=2,BM=OB=4..•.PḄᙶ᪗(4,2).ᦑPḄᙶ᪗(2,—2)ᡈ(4,2).ூQ௃R⚪Sᔠ⚪ὃVᦪḄḄឋஹῪḄᑨឋᐰḄᑨឋ@W1⚪ḄᐵYZ[\ᵨᑖ]^)Ḅ_`_ὃa⚪[\bcdᵨefB᪀⌼ᐰ1ia⚪.26ஹ(1)j1᪆*(2)ঝklmj1᪆.ூᑖ᪆௃(1)<Aᙊop5qrstuᑖvwAB,ACxyLzᯠ|<}+ᙊoᜧL}+Ḅzrtu+uyLzywAḄB,wBCxyLE,ᑣAE44CḄᑖB*(2)ᵫᑁᳮᑖBᳮ'ᑮNCAEMQO஺-3஺-g/,ᵫឋ

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