ÌâÄ¿ÄÚÈÝ
Ëæ»ú³éȡij³ÇÊÐÒ»Ä꣨ÒÔ365Ìì¼Æ£©ÖеÄ30ÌìµÄÈÕƽ¾ùÆøÎÂ×´¿öͳ¼ÆÈçÏ£ºÎ¶ȣ¨¡æ£©Î¶ȣ¨¡æ£© | 10 | 14 | 18 | 22 | 26 | 30 | 32 |
ÌìÊý | 3 | 5 | 5 | 7 | 6 | 2 | 2 |
£¨1£©¹À¼Æ¸Ã³ÇÊÐÄêƽ¾ùÆøδóÔ¼ÊǶàÉÙ£¿
£¨2£©Ð´³ö¸ÃÊý¾ÝµÄÖÐλÊý¡¢ÖÚÊý£»
£¨3£©¼ÆËã¸Ã³ÇÊÐÒ»ÄêÖÐÔ¼Óм¸ÌìµÄÈÕƽ¾ùÆøÎÂΪ26¡æ£¿
£¨4£©ÈôÈÕƽ¾ùÆøÎÂÔÚ17¡æ¡«23¡æΪÊÐÃñ¡°ÂúÒâζȡ±£¬ÔòÕâ×éÊý¾ÝÖдﵽÊÐÃñ¡°ÂúÒâζȡ±µÄÓм¸Ì죿
·ÖÎö£º£¨1£©ÏȼÆËãÑù±¾µÄƽ¾ùÊý£¬ÔÙ¹À¼ÆÄêƽ¾ùÆøΣ»
£¨2£©¸ù¾ÝÖÐλÊý¡¢ÖÚÊýµÄ¸ÅÄîÇóÖµ£»
£¨3£©ÓÉͼ¿ÉÖª£¬Ò»ÔÂÓÐ6ÌìζÈΪ26¡æ£¬ÔòÒ»ÄêÖÐÈÕƽ¾ùÆøÎÂΪ26¡æµÄÌìÊýΪ6¡Á12Ì죻
£¨4£©¶Áͼ¿ÉÖª£¬Õâ×éÊý¾ÝÖдﵽÊÐÃñ¡°ÂúÒâζȡ±µÄÌìÊýΪ5+7£®
£¨2£©¸ù¾ÝÖÐλÊý¡¢ÖÚÊýµÄ¸ÅÄîÇóÖµ£»
£¨3£©ÓÉͼ¿ÉÖª£¬Ò»ÔÂÓÐ6ÌìζÈΪ26¡æ£¬ÔòÒ»ÄêÖÐÈÕƽ¾ùÆøÎÂΪ26¡æµÄÌìÊýΪ6¡Á12Ì죻
£¨4£©¶Áͼ¿ÉÖª£¬Õâ×éÊý¾ÝÖдﵽÊÐÃñ¡°ÂúÒâζȡ±µÄÌìÊýΪ5+7£®
½â´ð£º½â£º£¨1£©30ÌìµÄÈÕƽ¾ùÆøÎÂ=
=20.8
¹À¼Æ¸Ã³ÇÊÐÄêƽ¾ùÆøδóÔ¼ÊÇ20.8¡æ£»
£¨2£©½«Õâ×éÊý¾Ý°´´ÓСµ½´óÅÅÁÐΪ£¬ÓÉÓÚÓÐ30¸öÊý£¬È¡µÚ15¡¢16λ¶¼ÊÇ22£¬ÔòÖÐλÊýΪ22£»
ÒòΪ22³öÏֵĴÎÊý×î¶à£¬Ôò¸Ã×éÊý¾ÝµÄÖÚÊýΪ22£»
£¨3£©Ò»ÄêÖÐÈÕƽ¾ùÆøÎÂΪ26¡æµÄÌìÊýΪ6¡Á12=72Ì죻
£¨4£©Õâ×éÊý¾ÝÖдﵽÊÐÃñ¡°ÂúÒâζȡ±µÄÌìÊýΪ5+7=12Ì죮
3¡Á10+5¡Á14+5¡Á18+7¡Á22+6¡Á26+2¡Á30+2¡Á32 |
30 |
¹À¼Æ¸Ã³ÇÊÐÄêƽ¾ùÆøδóÔ¼ÊÇ20.8¡æ£»
£¨2£©½«Õâ×éÊý¾Ý°´´ÓСµ½´óÅÅÁÐΪ£¬ÓÉÓÚÓÐ30¸öÊý£¬È¡µÚ15¡¢16λ¶¼ÊÇ22£¬ÔòÖÐλÊýΪ22£»
ÒòΪ22³öÏֵĴÎÊý×î¶à£¬Ôò¸Ã×éÊý¾ÝµÄÖÚÊýΪ22£»
£¨3£©Ò»ÄêÖÐÈÕƽ¾ùÆøÎÂΪ26¡æµÄÌìÊýΪ6¡Á12=72Ì죻
£¨4£©Õâ×éÊý¾ÝÖдﵽÊÐÃñ¡°ÂúÒâζȡ±µÄÌìÊýΪ5+7=12Ì죮
µãÆÀ£º´ËÌâÖ÷Òª¿¼²éѧÉú¶Áͼ»ñÈ¡ÐÅÏ¢µÄÄÜÁ¦£¬ÒÔ¼°Æ½¾ùÊý¡¢ÖÚÊý¡¢ÖÐλÊýµÄÇ󷨣®×¢ÒâÕÒÖÐλÊýµÄʱºòÒ»¶¨ÒªÏÈÅźÃ˳Ðò£¬È»ºóÔÙ¸ù¾ÝÆæÊýºÍżÊý¸öÀ´È·¶¨ÖÐλÊý£®Èç¹ûÊý¾ÝÓÐÆæÊý¸ö£¬ÔòÕýÖмäµÄÊý×Ö¼´ÎªËùÇó£»Èç¹ûÊÇżÊý¸ö£¬ÔòÕÒÖмäÁ½Î»ÊýµÄƽ¾ùÊý£®
Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿
¹Ø×¢Éú´æ»·¾³£¬¾ÍÊǹذ®ÉúÃü£¬ÏÂÃæËæ»ú³éȡij³ÇÊÐÒ»Äêµ±ÖÐÈô¸ÉÌìµÄ¿ÕÆøÖÊÁ¿Í³¼Æ·ÖÎö£¬ÇëÄã×Ðϸ¹Û²ìËù¸øͼ±í£¬½â´ðÏÂÁÐÎÊÌ⣬¿ÕÆøÖÊÁ¿Í³¼Æ±í£¨I£©
ƵÊý·Ö²¼±í£¨II£©
£¨1£©Ìî³ä±í£¨¢ò£©£¬²¹È«Í¼£¨¢ó£©£»
£¨2£©Èç¹ûw¡Ü100ʱ£¬¿ÕÆøÖÊÁ¿ÎªÁ¼£»
100£¼w¡Ü150ʱ£¬¿ÕÆøÖÊÁ¿ÎªÇá΢ÎÛȾ£¬¹À¼Æ¸Ã³ÇÊÐÒ»Ä꣨365Ä꣩ÖÐÓжàÉÙÌì¿ÕÆøÖÊÁ¿ÎªÇá΢ÎÛȾ£»
£¨3£©ÇëÄã´Ó¡°Æ½¾ùÊý¡±¡¢¡°ÖÚÊý¡±¼°¡°ÖÐλÊý¡±Èý¸öÌØÕ÷Á¿ÖУ¬Ñ¡ÔñÄãÈÏΪÊʵ±µÄÒ»¸öÌØÕ÷Á¿¶Ô¸Ã³ÇÊÐÒ»Äê¿ÕÆøÖÊÁ¿µÄ×ÜÌåÇé¿ö½øÐйÀ¼ÆºÍÃèÊö£¬²¢ËµÃ÷ÕâÖÖ¹À¼ÆµÄºÏÀíÐÔ£®
ÎÛȾָÊý£¨w£© | 40 | 70 | 90 | 110 | 120 | 140 |
ÌìÊý£¨t£© | 3 | 5 | 10 | 8 | 3 | 1 |
·Ö×é | 40 60 | 60 80 | 80 100 | 100 120 | 120 140 | ºÏ¼Æ |
ƵÊý | 3 | 5 | 10 | 8 | 4 | |
ƵÂÊ | 0.167 | 0.333 | 0.267 | 0.133 |
£¨2£©Èç¹ûw¡Ü100ʱ£¬¿ÕÆøÖÊÁ¿ÎªÁ¼£»
100£¼w¡Ü150ʱ£¬¿ÕÆøÖÊÁ¿ÎªÇá΢ÎÛȾ£¬¹À¼Æ¸Ã³ÇÊÐÒ»Ä꣨365Ä꣩ÖÐÓжàÉÙÌì¿ÕÆøÖÊÁ¿ÎªÇá΢ÎÛȾ£»
£¨3£©ÇëÄã´Ó¡°Æ½¾ùÊý¡±¡¢¡°ÖÚÊý¡±¼°¡°ÖÐλÊý¡±Èý¸öÌØÕ÷Á¿ÖУ¬Ñ¡ÔñÄãÈÏΪÊʵ±µÄÒ»¸öÌØÕ÷Á¿¶Ô¸Ã³ÇÊÐÒ»Äê¿ÕÆøÖÊÁ¿µÄ×ÜÌåÇé¿ö½øÐйÀ¼ÆºÍÃèÊö£¬²¢ËµÃ÷ÕâÖÖ¹À¼ÆµÄºÏÀíÐÔ£®
Ëæ»ú³éȡij³ÇÊÐÒ»Ä꣨ÒÔ365Ìì¼Æ£©ÖеÄ30ÌìµÄÈÕƽ¾ùÆøÎÂ×´¿öͳ¼ÆÈçÏ£º
Ôò¿É¹À¼Æ¸Ã³ÇÊÐÒ»ÄêÖÐÈÕƽ¾ùÆøÎÂΪ26¡æµÄÔ¼ÓÐ Ì죮
ζȣ¨x¡æ£© | 10 | 14 | 18 | 22 | 26 | 30 | 32 |
ÌìÊýt | 3 | 5 | 5 | 7 | 6 | 2 | 2 |
Ëæ»ú³éȡij³ÇÊÐÒ»Äê(ÒÔ365Ìì¼Æ)ÖеÄ30ÌìµÄÈÕƽ¾ùÆøÎÂ×´¿öͳ¼ÆÈçÏÂ:
ζÈ(x¡æ) |
10 |
14 |
18 |
22 |
26 |
30 |
32 |
ÌìÊýt |
3 |
5 |
5 |
7 |
6 |
2 |
2 |
Çë¸ù¾ÝÉÏÊöÊý¾ÝÌî¿Õ:
(1)¸Ã×éÊý¾ÝµÄÖÐλÊýÊÇ________.
(2)¸Ã³ÇÊÐÒ»ÄêÖÐÈÕƽ¾ùÆøÎÂΪ26¡æµÄÔ¼ÓÐ_____Ìì.
(3)ÈôÈÕƽ¾ùÆøÎÂÔÚ17¡æ¡«23¡æΪÊÐÃñ¡°ÂúÒâζȡ±£¬Ôò¸Ã³ÇÊÐÒ»ÄêÖдﵽÊÐÃñ¡°ÂúÒâζȡ±µÄÔ¼ÓÐ________Ìì.