福建省福州市2022-2023學(xué)年九年級(jí)上學(xué)期期末數(shù)學(xué)試題

（在此卷上答題無效）2022-2023學(xué)年第一學(xué)期福州市九年級(jí)數(shù)學(xué)適應(yīng)性練習(xí)本練習(xí)卷分第Ⅰ卷（選擇題）和第Ⅱ卷（非選擇題）兩部分，完卷時(shí)間120分鐘，1．答題前，學(xué)生務(wù)必在本練習(xí)卷及答題卡規(guī)定位置填寫本人準(zhǔn)考證號(hào)、姓名等信墨水簽字筆在答題卡上相應(yīng)位置書寫作答，海，深圳，福州四個(gè)城市的地鐵標(biāo)志，其中是中心對(duì)稱圖形ABCDABCD九年級(jí)數(shù)學(xué)－1－（共5頁(yè)）yyBCFEBCF12AA．x1=-1，x2=-2B．x1=-1，x2=2C．x1=1，x2=-2D．x1=1，x2=27．將拋物線y=(x-2)2+3向左平移1個(gè)培養(yǎng)過程．某中學(xué)加大校園農(nóng)場(chǎng)建設(shè)，為學(xué)生提供更多的勞動(dòng)場(chǎng)所．該農(nóng)場(chǎng)某種作物2020年的年產(chǎn)量為100千克，2022年的年產(chǎn)量為225千克．設(shè)該作物年產(chǎn)平均增長(zhǎng)率為x，則符合題意的方程是A．100(1+2x)=2252=225A．x=-2B．x=2九年級(jí)數(shù)學(xué)－2共5頁(yè)）13．某林業(yè)部門要考察某種幼樹在一定條件下的移植成活率，在同樣條件下，對(duì)這種幼樹進(jìn)行大量移植，并完成統(tǒng)計(jì)情況，13356335126282.75O2.75O0.51.117本小題滿分8分）解方程：x23x2=0.18本小題滿分8分）AEDBFC九年級(jí)數(shù)學(xué)－3共5頁(yè)）DCDCABC類別45%19本小題滿分8分）如圖，將△ABC繞點(diǎn)A順時(shí)針旋轉(zhuǎn)α得到△ADE(α為銳角點(diǎn)D與點(diǎn)B對(duì)應(yīng)，21本小題滿分8分）ABBE人數(shù)181412B1412B（1）參與此次抽樣調(diào)查的學(xué)生人數(shù)是，扇形統(tǒng)計(jì)圖中A部分圓心角的度數(shù)是；22本小題滿分10分）M九年級(jí)數(shù)學(xué)－4共5頁(yè)）AFxAFx23本小題滿分10分）4x4xBEB24本小題滿分13分）（1）如圖1，若△ABC是等邊三角形，AAEEHHEFF25本小題滿分13分）在，請(qǐng)說明理由.九年級(jí)數(shù)學(xué)－5共5頁(yè)）2022－2023學(xué)年第一學(xué)期福州市九年級(jí)數(shù)學(xué)適應(yīng)性練習(xí)答案及評(píng)分標(biāo)準(zhǔn)查內(nèi)容比照評(píng)分參考制定相應(yīng)的評(píng)分細(xì)則.如果后繼部分的解答有較嚴(yán)重的錯(cuò)誤，就不再給分.3．解答右端所注分?jǐn)?shù)，表示學(xué)生正確做到這24ac24x1x(2)=17>0，·····················································································································································2··································································································2a·········································································································,22 .·················································2∴AD∥BC，····························∴四邊形AECF是平行四邊形，·················································································6分.······································解得a<1，··································································PM20本小題滿分8分）PMA∴AB=AD，AC=AE，BAD=CAE，···················BBACAEE21本小題滿分8分）解1）40；··················································································································2分54°.··············································································12341234并且它們發(fā)生的可能性相等，···························································22本小題滿分10分）QOO····································································································································∴OM=PM=x，OP=2PM=∴OM=r，··················································································∴點(diǎn)M在⊙O上.········將得AEFHKAOFx23本小題滿分將得AEFHKAOFxyBE····································································································································〈〈yyCCMNMNEB································QAEB································QAFx矩形MNPQ.····················································24本小題滿分13分）∴BH=AH，··········································································DH=BH，····························································································3分∴AH=2DH.························②解：過點(diǎn)H作HK∥BC交AG于點(diǎn)K，∴HK=AH，····················································DGADHKAH=2DH，F(xiàn)是CH的中點(diǎn)，········································································································································································································DG38585DGADAEHKHFBDHDADCD AD6AD=2，··································△ABC2