八年级数学（浙教版）下册——SMJ全部的答案 需要全部的答案,如果没有,有多少要多少
》》》更多初中数学视频.该站的初二数学视频集有:
绛旓細銆愮瓟妗堛戯細 鍩虹缁冧範 1銆5 锛3 2銆佺瓟妗堜笉鍞竴锛屽 AB = AD 3銆丏 4銆佽瘉娉曚笉鍞竴锛 渚嬪锛屽厛璇佲柍AOE 鈮 鈻矯OF锛屽緱鍒颁竴缁勫杈瑰钩琛屼笖鐩哥瓑锛屽啀璇佷竴缁勯偦杈圭浉绛 缁煎悎杩愮敤 5銆佹牴鎹洓杈圭浉绛夌殑鍥涜竟褰㈡槸鑿卞舰璇佹槑 6銆佽瘉娉曚笉鍞竴锛庝緥濡傦紝鐢 AD 鏄 ∠BAC 鐨勫钩鍒嗙嚎锛孌E鈭C锛 寰 AE = DE.鍚...
绛旓細.(鏈皬棰樻弧鍒12鍒)(2009澶╂触,鏂19)濡傚浘,鍦ㄥ洓妫遍敟P鈥擜BCD涓,PD鈯ュ钩闈BCD,AD鈯D,DB骞冲垎鈭燗DC,E涓篜C鐨勪腑鐐,AD锛滳D锛1,(1)璇佹槑PA鈥栧钩闈DE;(2)璇佹槑AC鈯ュ钩闈BD;(3)姹傜洿绾緽C涓庡钩闈BD鎵鎴愮殑瑙掔殑姝ｅ垏鍊.绛旀:璁続C鈭〣D锛滺,杩炵粨EH.鍦ㄢ柍ADC涓,鍥犱负AD锛滳D,涓擠B骞冲垎鈭燗DC,鎵浠涓篈C鐨勪腑鐐....
绛旓細銆愮瓟妗堛戯細 鍩虹缁冧範 1銆4 2銆4 锛9 3銆30°锛1 : 2 4銆佽瘉 鈻矨OB 鈮 鈻矯OD 鎴 璇 OB = 1/2BD = 1/2AC = OC 缁煎悎杩愮敤 5銆佺敱EF = EC锛∠AEF = ∠DCE 锛∠A = ∠D = Rt∠锛 寰椻柍AFE鈭解柍DEC 6銆侊紙1锛30° 锛2锛夎瘉 鈻矰EF 鈮 鈻矪CF锛屾垨鍏...
绛旓細绗竴棰(1+x)鐨勫钩鏂=4.75 绗簩棰 (5000+x)鐨勫钩鏂- (5000+x)=1200 鑷繁鐢ㄨ绠楀櫒绠椾笅
绛旓細濉┖棰橈細a//c,120搴︼紝60搴︼紝35搴,50搴,25搴,-鏍瑰彿2+鏍瑰彿2=0涓嶆槸鏃犵悊鏁帮紝BD=CD锛寈>5,7,60搴,90搴.閫夋嫨棰橈細BADCDCAB
绛旓細鍥犱负浜屾鍑芥暟姣斿弽姣斾緥鍑芥暟绠鍗曚竴浜涳紝鑰屼笖浜屾鍑芥暟鏄负鍙嶆瘮渚嬪嚱鏁版墦鍩虹鐨
绛旓細銆嬨嬨嬫洿澶氬垵涓暟瀛﹁棰.璇ョ珯鐨鍒濅簩鏁板瑙嗛闆嗘湁:
绛旓細[鏁欒偛] 鍒濅腑鏁板鍏勾绾т笅鍐 <a href=" http://v.ku6.com/special/index_2426121.html" target="_blank"> http://v.ku6.com/special/index_2426121.html</a> [鏁欒偛] 鈽呭垵涓暟瀛﹀叏闆嗐愮壒绾ф暀甯堣緟瀵笺(鍚垵涓鍒板垵涓)<a href=" http://v.ku6.com/special/index_2427093.html" target="_...
绛旓細鍏勾绾т笅鍐屾禉鏁欑増绉戠洰鏈鏁板銆佽鏂囧拰绉戝銆
绛旓細鏌愬嚭鐗堢ぞ,濡傛灉浠ユ瘡鏈2.50鍏冧环鏍煎彂琛屼竴绉嶄功,鍙彂琛80000鏈,濡傛灉涓鏈功瀹氫环姣忓崌楂0.1鍏,鍙戣閲忓氨鍑忎簡2000鏈,濡傛灉瑕佷娇鏀跺叆涓嶄綆浜200000鍏,姹傝繖绉嶅浘涔︾殑鏈楂樹环.璁炬彁楂榓涓0.1鍏,鍒欏皯鍙戣2000a鏈 璁炬敹鍏ヤ负y鍏 y=锛2.5+0.1a锛壝楋紙80000-2000a锛=200锛25+a锛壝楋紙40-a锛=-200锛坅²-...
