ÌâÄ¿ÄÚÈÝ

£¨±¾ÌâÂú·Ö12·Ö£©

´ÓijѧУ¸ßÈýÄ꼶800ÃûѧÉúÖÐËæ»ú³éÈ¡50Ãû²âÁ¿Éí¸ß£¬¾Ý²âÁ¿±»³éÈ¡µÄѧÉúµÄÉí¸ßÈ«²¿½éÓÚ155cmºÍ195cmÖ®¼ä£¬½«²âÁ¿½á¹û°´ÈçÏ·½Ê½·Ö³É°Ë×飺µÚÒ»×飮µÚ¶þ×飻¡­µÚ°Ë×飬ÓÒͼÊÇ°´ÉÏÊö·Ö×éµÃµ½µÄÌõÐÎͼ¡£

£¨I£©¸ù¾ÝÒÑÖªÌõ¼þÌîдÏÂ±í£º

×é ±ð

1

2

3

4

5

6

7

8

Ñù±¾Êý

  

£¨II£©¹À¼ÆÕâËùѧУ¸ßÈýÄ꼶800ÃûѧÉúÖÐÉí¸ßÔÚ180cmÒÔÉÏ(º¬180cm)µÄÈËÊý£»

   £¨¢ó£©ÔÚÑù±¾ÖУ¬ÈôµÚ¶þ×éÓÐ1ÈËΪÄÐÉú£¬ÆäÓàΪŮÉú£¬µÚÆß×éÓÐ1ÈËΪŮÉú£¬ÆäÓàΪÄÐÉú£¬ÔÚµÚ¶þ×éºÍµÚÆß×éÖи÷Ñ¡Ò»Ãûͬѧ×é³ÉʵÑéС×飬ÎÊ£ºÊµÑéС×éÖÐǡΪһÄÐһٵĸÅÂÊÊǶàÉÙ£¿

£¨±¾ÌâÂú·Ö12·Ö£©

½â£º(1)ÓÉÌõÐÎͼµÃµÚÆß×éƵÂÊΪ.

¡àµÚÆß×éµÄÈËÊýΪ3ÈË.           ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­3·Ö

×é±ð

1

2

3

4

5

6

7

8

Ñù±¾ÖÐÈËÊý

2

4

10

10

15

4

3

2

(2)ÓÉÌõÐÎͼµÃÇ°Îå×éƵÂÊΪ(0.008+0.016+0.04+0.04+0.06)¡Á5=0.82,

ºóÈý×éƵÂÊΪ1-0.82=0.18.¹À¼ÆÕâËùѧУ¸ßÈýÄ꼶Éí¸ßÔÚ180cmÒÔÉÏ(º¬180cm)µÄÈËÊý800¡Á0.18=144(ÈË). ¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­¡­7·Ö

(3)µÚ¶þ×éËÄÈ˼ÇΪ¡¢¡¢¡¢£¬ÆäÖÐaΪÄÐÉú£¬b¡¢c¡¢dΪŮÉú£¬µÚÆß×éÈýÈ˼ÇΪ1¡¢2¡¢3£¬ÆäÖÐ1¡¢2ΪÄÐÉú£¬3ΪŮÉú£¬»ù±¾Ê¼þÁбíÈçÏ£º

a

b

c

d

1

1a

1b

1c

1d

2

2a

2b

2c

2d

3

3a

3b

3c

3d

ËùÒÔ»ù±¾Ê¼þÓÐ12¸ö,

ǡΪһÄÐһٵÄʼþÓÐ1b£¬1c£¬1d£¬2b£¬2c£¬2d£¬3a¹²7¸ö,

Òò´ËʵÑéС×éÖУ¬Ç¡ÎªÒ»ÄÐһٵĸÅÂÊÊÇ.     ¡­¡­¡­¡­¡­¡­¡­12·Ö

Á·Ï°²áϵÁдð°¸
Ïà¹ØÌâÄ¿

Î¥·¨ºÍ²»Á¼ÐÅÏ¢¾Ù±¨µç»°£º027-86699610 ¾Ù±¨ÓÊÏ䣺58377363@163.com

¾«Ó¢¼Ò½ÌÍø