öλÔÓéÀֵǼÈë¿ÚÏÂÔØ

1. ¸ùºÅ8³ýÒÔ2±¶¸ùºÅ2
²Î¿¼´ð°¸£º1
˼·£º

2.
[°æ±¾1] ¸øÁËÒ»¸öÖù״ͼ£¬ ½²¹«Ë¾ÀïÔ±¹¤µÄ¸÷×Ô·Ö±ðµÄʱ¼ä¡£±ÈÈç˵ÓÐ10¸öÈËÒª5Ì죬 9¸öÈËÒª9Ì죬 8¸öÈËÒª2Ì죬3 ¸öÈËÒª4ÌìÖ®À࣬ È»ºóÎÊÄãËûÃǵÄÖÐÊýÊǶàÉÙ£¿£¨ÒÔÉϾßÌåÊý×Ö²»¶Ô£©

[°æ±¾2] ¸øÁËÒ»¸öÖùÐÍͼ£¬ËµÒ»¸öteamÓУ³£µ¸öÈË£¬È»ºóÄØ×öÍêÒ»Ï×÷µÄʱ¼äÓУ´£¬£µ£¬£¶£¬£·£¬£¸ËÄÖÖ°É£¨ÕâÊǺá×ø±ê£©£¬×Ý×ø±êÊÇÕ⼸ÖÖʱ¼ä·Ö±ðµÄÈËÊý£¬È»ºóÎÊÕâ¸öteamÀïµÄÍê³ÉÕâÏ×÷µÄʱ¼äµÄÖÐÊýÊǶàÉÙ£¿(Ç°ÈË»ú¾­£¬ÎÒöλÔÓéÀֵǼÈë¿ÚÏÂÔØʱ£¬ÊÇ3.4.5.6.7,8.ËãµÃÊÇ6.ETS±È½Ï½Æ»«£¬18Õâ¸öÊýµÄλÖÃ6µÄ×îÉÏÍ·)

²Î¿¼´ð°¸£º
˼·£º

3. Ò»µÀºÜ³¤µÄ¼ÆË㡣ÿ¸ö²¿·Ö¶¼ÊÇÒ»¸öСÊýµÄ10µÄÈô¸É¸º´Î·½£¬×îºóÿһ¸ö²¿·Ö¼ÓÆðÀ´ÒÔºó£¬ÎÊÄã×îºóһλӦ¸ÃÔÚµÚ¼¸Î»
²Î¿¼´ð°¸£ºÊý×ÖÄ£ºý£¬ÎÞ·¨¼ÆËã
˼·£º

4. 0.4/0.02=
²Î¿¼´ð°¸£º20
˼·£º¾ÓÈ»ÓÐÈç´ËÈõÖǵÄÌâÄ¿¡£^_^

5. (x+3)^2=y , x^2+6x+17=
²Î¿¼´ð°¸£ºy+8
˼·£º

6. Ò»¸öÈËlast yearÊÕÈëÀһ²¿·Ö»¨£¬Ò»²¿·Ö´æ¡£Ã¿´æµÄÒ»dollarÒ»Äêºó¶¼ÓÐrÀûÏ¢¡£Èç¹û½ñÄêûÓÐÊÕÈ룬¶øÊÇÄÇÈ¥ÄêµÄÀ´»¨£¬ÎÊÈç¹û½ñÄ껨µÄÇ®ÊÇÈ¥ÄêµÄÒ»°ëµÄ»°£¬ÎÊÈ¥ÄêÓªÄÇÊÕÈëµÄwhat¡¡fractionÀ´´æ£¿Óãò±íʾ¡£ £¨ÀÏ»ú¾­£¬²»¹ýÓб仯£©
²Î¿¼´ð°¸£º
˼·£º

7. if |x|<1? £¨ÀÏ»ú¾­£¬²»¹ýÌõ¼þ1Óб仯£©
a) |x+1| < 2|x-1|
b) |x-3| <>0 (x<>3)
²Î¿¼´ð°¸£ºE(Ô­´ð°¸C)
˼·£º

8. A retailor bought 100 radios for $30 each, sold n radios for $50 each, and sold the left for x bucks each, made a total profit of $1500, then ask about whether x > $40 or not? £¨ÀÏ»ú¾­£©
(1) n > 60
(2) n < 80
²Î¿¼´ð°¸£ºA
˼·£º50n+(100-n)x=4500£¬xËænµÝ¼õ

9. µÈÑüÈý½ÇÐΣ¬ÓÐͼ£¬Èý½ÇΪX£¬X£¬Y£¬ÖªµÀÒ»¸öXµÄ²¹½ÇΪ135¶È£¬ÇóY¡£
²Î¿¼´ð°¸£º90
˼·£º

10. ±È½ÏÈý¸öÊý´óС£¨6,¸ùºÅ37, 37/6£©¡£°´ÉýÐòÅÅÁС£
²Î¿¼´ð°¸£º6,¸ùºÅ37, 37/6
˼·£º

11. Ò»¸öµçÓ°Ôº£¬µÚÒ»ÅÅÓÐ16¸öλÖã¬Ã¿ºóÒ»ÅŶàÁ½¸ö£¬×îºóÒ»ÅÅ64£¬ÎÊ×ܹ²¶àÉÙ£¿
²Î¿¼´ð°¸£º1000
˼·£ºa(n)=14+2n

12. Ò»¸öÊý£¬³ý15µÃR£¬Óà2£¬³ý17£¬Óà2.ÎÊR/17Ó༸
²Î¿¼´ð°¸£º0
˼·£º

13. 1.00001*0.99999+1.00002*0.99998=?
²Î¿¼´ð°¸£º2-5*10^(-10)
˼·£º(1+x)(1-x)=1-x^2

14. Ò»¸öÇòÂäϵ¯»ØÔ­¸ß¶È75%£¬µ½µÚÈý´ÎÂäµØ¹²ÂóÌΪ2146CM£¬ÎÊ×î³õ¸ß¶È£¿
²Î¿¼´ð°¸£º592CM (Ô­´ð°¸600£¬´ËÌâ³öÏÖÁ½´Î)
˼·£ºx+2*0.75x+2*0.75*0.75x=2146

15. ¶þÖÖÁòËáÈÜÒºº¬Á¿·Ö±ðΪ2%ºÍ12%£¬ÎÊÒª»ìºÏ³É600Éý10%£¨¿ÉÄÜÓÐÎ󣩵ÄÈÜÒºÐèÒª2%µÄÈÜÒº¶àÉÙÉý£¿
²Î¿¼´ð°¸£º120
˼·£º2%x+12%(600-x)=600*10%