ÌâÄ¿ÄÚÈÝ
¡¾ÌâÄ¿¡¿Ä³´ÆÐÛÒìÖêµÄ¶þ±¶ÌåÖ²ÎïµÄÐÔ±ð¾ö¶¨·½Ê½ÊÇXYÐÍ¡£¸ÃÖ²ÎﻨɫÓкìÉ«ºÍ°×É«¡£ÏÖÓÃÒ»Öê´¿ºÏµÄºì»¨´ÆÖêºÍÒ»Öê´¿ºÏ°×»¨ÐÛÖêÔÓ½»£¬F1¾ùΪºì»¨£¬F1Ëæ»ú½»Å䣬F2±íÏÖÐͼ°±ÈÀýÈçϱíËùʾ¡£¾Ý´Ë»Ø´ðÏÂÁÐÎÊÌ⣺
ºì»¨ | °×»¨ | |
´ÆÖê | 15/32 | 1/32 |
ÐÛÖê | 9/32 | 7/32 |
£¨1£©Îª±È½Ï¸ÃÖ²Îï´ÆÐÛ¸öÌåºËÐ͵IJîÒ죬ÐèÒª¶Ô´¦ÓÚ__________µÄȾɫÌå½øÐÐÏÔ΢ÉãÓ°ºóͨ¹ý¼ôÌùºÍ__________¡£
£¨2£©¿ØÖƸÃÖ²ÎﻨɫÒÅ´«µÄ»ùÒòλÓÚ__________¡£°×»¨¸¸±¾µÄ»ùÒòÐÍ¿ÉÄÜÓÐ__________ÖÖ£¬F2ºì»¨´ÆÖêÖд¿ºÏ×ÓËùÕ¼µÄ±ÈÀýΪ__________¡£
£¨3£©ÈôÈ¡F2Öк컨´ÆÐÛÖ²Ëæ»úÊÚ·Û£¬F3Öа׻¨ÐÛÖêËùÕ¼µÄ±ÈÀýΪ__________¡£
£¨4£©ÈôÑ¡ÔñF2Öд¿ºÏµÄ°×»¨´ÆÐÛÖ²Ëæ»úÊÚ·Û£¬F3ÖÐÊÇ·ñ»á³öÏֺ컨ֲÖꣿ__________£¬·ÖÎöÀíÓÉ£º__________¡£
¡¾´ð°¸¡¿ÓÐË¿·ÖÁÑÖÐÆÚ Åä¶Ô¡¢·Ö×éºÍÅÅ¶Ó Á½¶Ô³£È¾É«Ìå 3 1/5 13/90 »á ²¿·Ö°×»¨ÐÛÖêÊÇÒ»¶Ô»ùÒòÏÔÐÔ£¬Ò»¶Ô»ùÒòÒþÐÔ£¬ÄܲúÉúЯ´øÓÐÒ»¸öÏÔÐÔ»ùÒòµÄÐÛÅä×Ó£¬ÐγɵÄÊܾ«ÂÑҲЯ´øÓÐÏÔÐÔ»ùÒò£¬´øÓÐÏÔÐÔ»ùÒòµÄ´ÆÖê±íÏÖΪºì»¨
¡¾½âÎö¡¿
¾Ý±í¸ñ¿ÉÖª£¬´ÆÖêÖк컨£º°×»¨=15£º1£¬ÐÛÖêÖк컨£º°×»¨=9£º7£¬¾ùΪ9£º3£º3£º1µÄ±äʽ£¬ÍÆÖª¿ØÖÆ»¨É«µÄ»ùÒòÓÐÁ½¶Ô£¬ÇÒ¶ÀÁ¢ÒÅ´«£¬ÉèΪA¡¢a£¬B¡¢b¡£
£¨1£©ÓÐË¿·ÖÁÑÖÐÆÚȾɫÌåÐÎ̬ÊýÄ¿×îÇåÎú£¬¹ÊÑ¡Ôñ¸ÃʱÆÚµÄȾɫÌå½øÐÐÏÔ΢ÉãÓ°ºóͨ¹ý¼ôÇС¢Åä¶Ô¡¢·Ö×éºÍÅŶӣ¬´Ó¶ø±È½Ï¸ÃÖ²Îï´ÆÐÛ¸öÌåºËÐͲîÒì¡£
£¨2£©¿ØÖƸÃÖ²ÎﻨɫÒÅ´«µÄ»ùÒòÓÐÁ½¶ÔÇÒλÓÚ³£È¾É«ÌåÉÏ£»°×»¨¸¸±¾µÄ»ùÒòÐÍ¿ÉÄÜÊÇAAbb¡¢aaBB»òaabb£¬3ÖÖ£»F2ºì»¨Ö²ÖêÖд¿ºÏ×ÓÓÐAABB¡¢AAbb¡¢aaBB£¬¸÷1·Ý£¬Õ¼±ÈΪ3/15=1/5¡£
£¨3£©F2Öк컨´ÆÖêÓÐ9/15A B ¡¢3/15A bb¡¢3/15aaB-£¬²úÉúÅä×Ó£º4/15AB¡¢4/15Ab¡¢4/15aB¡¢3/15ab£»ºì»¨ÐÛÖêÓÐA B £¬²úÉúÅä×Ó£º4/9AB¡¢2/9Ab¡¢2/9aB¡¢1/9ab£»Á½ÕßËæ»úÊÚ·Ûʱ£¬Åä×ÓËæ»ú½áºÏ£¬ºó´úÖа׻¨ÐÛÖêËùÕ¼±ÈÀýΪ£º39/135¡Á1/2£¨¡á£©=13/90¡£
£¨4£©²¿·Ö°×»¨ÐÛÖêÊÇA bb¡¢aaB £¬ÄܲúÉúЯ´øÓÐÒ»¸öÏÔÐÔ»ùÒòµÄÐÛÅä×Ó£¬ÐγɵÄÊܾ«ÂÑҲЯ´øÓÐÏÔÐÔ»ùÒò£¬´øÓÐÏÔÐÔ»ùÒòµÄ´ÆÖê±íÏÖΪºì»¨¡£
¡¾ÌâÄ¿¡¿ÀÏÊóëɫÓкÚÉ«ºÍ»ÆÉ«Ö®·Ö£¬ÕâÊÇÒ»¶ÔÏà¶ÔÐÔ×´£¬ÓÉÒ»¶ÔµÈλ»ùÒò¿ØÖÆ¡£Çë¸ù¾ÝÏÂÃæÈý×é½»Åä×éºÏ£¬ÅжÏËĸöÇ×±¾ÖÐÊÇÔÓºÏ×ÓµÄÊÇ£¨ £©
½»Åä×éºÏ | ×Ó´ú±íÏÖÐͼ°ÊýÄ¿ | |
¢Ù | ¼×£¨»ÆÉ«£©¡Á±û£¨ºÚÉ«£© | 8£¨ºÚ£©¡¢9£¨»Æ£© |
¢Ú | ¼×£¨»ÆÉ«£©¡Á¶¡£¨ºÚÉ«£© | ȫΪºÚÉ« |
¢Û | ÒÒ£¨ºÚÉ«£©¡Á±û£¨ºÚÉ«£© | 12£¨ºÚ£©¡¢4£¨»Æ£© |
A.¼×ºÍÒÒB.ÒҺͱûC.±ûºÍ¶¡D.¼×ºÍ¶¡