是广西师范大学出版社的

是广西师范大学出版社的
是广西师范大学出版社的

是广西师范大学出版社的
数学
P17 CBBBACD 40° 90° 60° 90° 14
P18-13题

跟哥聊，哥帮你

那么多种啊。。。

数学232444---432323---4313441---3312214---313243334---112314---4332-唉，把数学也发下 数学的也发下 那也可以，拜托了 有英语吗

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什么吗，，，，，我在找，，，，，九年级的，，，，

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我也要

数学
P17 CBBBACD 40° 90° 60° 90° 14
P18-13题
14题画一条平行线c，然后做一条高
15题由123证明：三角形AFD全等于三角形BEC
因为AD=C...

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数学
P17 CBBBACD 40° 90° 60° 90° 14
P18-13题
14题画一条平行线c，然后做一条高
15题由123证明：三角形AFD全等于三角形BEC
因为AD=CD，AE=CF
又因为AF=EC
角B=角D 所以三角形AFD全等于三角形BEC
P19第9题选择角ABC,因为AB=AC,角abc是等腰三角形
20或22 20 65° 20 5和根号7 DDBD
P20—10有3个,图略
--11图略
--12 6的平方加8的平方等于100，，根号100等于10，，10加6等于16，，
--13 (1)AC是公共边,{CE=CF,（2）根号34
P21 DBCBDCB 30 球体 4 -2 36cm2 4种
P22--13 3×4÷2×2=12
4×2＋2×3=14
2×5=10
10+14+12=36
P23 BDDBC 抽样 普查 9 544.5 20 2
P24—10（1）程:(98+80+80)/3=86 杨:(95+93+90)/3=92.6
林:(80+100+100)/3=93.3 冠军林飞,亚军李扬,季军程丽
（2）程丽:78.24 李扬93.2 林飞:92 冠军李扬,亚:林飞,季:程丽
平均数 甲1.69m，乙1.68m 稳定程度 S2甲0.0006 S2乙0.0001315 甲 乙
P25 DDD ＞＞＜＞ -2≤t ≤8 x＜-2分之1 x大于等于2 k≥4分之30 x小于等于5 m 大于等于9
P26--10 6(2x-1)-24≤4(1+x)
12x-6-24≤4+4x
12x-30≤4+4x
8x≤34
X≤17/4
--11设A,B原价分别为a,b， 由已知可得b调价10%得A,B新的价格分别为1.1a（看成m),1.1b（看成n)，（1）式乘以1.1得1.1b<1.1a<2.2b,即n增加10元，A,B新的价格分别为a+10（看成m),b+10（看成n)， （1）式各项加上10，即为 b+10n12.设：总资金为x元
15%x+10%（x+15%x）〈 30%x -700
0.15x+0.1x+0.015x 〈 0.3x-700
x 〉20000
所以当商家投入资金大于20000时，可选择在月末出售，从而使获利较多
13（1）设建A花坛x个，B花坛y个，要确保玫瑰花和杜鹃花够栽，则
50x+ 80y = 1250 ①
100x+90y = 1930 ②
解得y=8（个），x= 12（个）
P27 CBBCBC a＞0 b=0 【-3，-2】 【-100根号5，-100】 北偏西，50°方向5千米【一道题】 【2,1】 -1＜a＜3 RT
P28--15 2×7÷2=7
5×5=25
2×5÷2=5
2×5÷2=5
5+5+25+7=42平方厘米
--16 选B位坐标点,别忘了箭头,A(1,根号3)B(0,0)C(2,0)
—17（2）B(-3,-3) C'(-1,0)
P29 DBBBD V πr平方h π v,r,h y= 最后没写完 是y=2x+4 y1大于y2 y=6x x=-6 y=-9
P30—12 正比例函数Y=KX.2=K*(-2)则K=-1.解析式Y= -X.
一次函数(-X)/X+2=(4-Y)/(Y-2)整理得:Y=X+4
三角形PQO的面积2*4/2=4
13题34=22k+b
36+23k+b
2-1得：k=2
由1得：b=-10
所以y=2x-10
第三小题：当y=30时，x=20
所以鞋长为20厘米
14题（1）y1+x y2=12+0.4x
(2)答：小斌选取会员卡租碟核算
P31 DBADCD x≥3 1,2,3 16， 15.8 ，16. 40 m≥0
P32—12 {3x-2<4x {-x<2
{3-5x>3x-5 {X<1
-2--13
---14（1）10x+8(15-x)≤144 6x+8(15+x)≤102
（2）共有4种方案：甲礼盒安排9盒，乙礼盒安排6盒，
或甲礼盒安排10盒，乙礼盒安排5盒，
或甲礼盒安排11盒，乙礼盒安排4盒，
或甲礼盒安排12盒，乙礼盒安排3盒
--15 （1）A(6,0)B(0,6)
（2）{4=k+b 0=4k+b
2-1得：k=-2
b=8
y=-2x+8(x不等于4_)
（3）S=X(8-2X)/2 无解





英语
P33：1、take a deep breath
2、show sb. aroud
3、make mistakes
4、get a bad mark
5、the answer to the question
6、enter a competition
7、 try western food
8、dream come ture
9、give concerts
10、go abroad
1.singing
2．really
3．visitors
4．Italian
5．wonderful
6．first
7．foreigners
8．translating
Why don't What else What shoud do Where have seen has never visited any
1、Hurry up，the plane is adout to take off
2、We have to stay here until tomorrow, for tickets have been sold out
3、He always speak English in class
4、We should help each other
5.Can you tell me how to learn English well
P34：AABCB
P35：
1:on business 2:so far 3:now and them 4:space station 5: the same as 6: be different from
7;drop out of school 8:receive education 9:with the help of 10:in the near 15 years
第二题:1:planets2:cost3:speak4:mad5:examed6:some messages7:go abroad8:in village
P36： CACBACBCDB
P37：
第一道 Playing electronic music
Except... outside
One of the most important figures
Due to the negligence
extinguish
No matter do
what
As... recording
kinds of music
grow up
第二道
fun sadly called was cooking elder sitting noisy was reading;came
第三和第四道
1:gold ring
2:play any tnstraments
3:of
4:go off
5:in the 20th century
1:wasn't he
2:isn't there
3:jack was ranning in the park at this timeyestday
4how many times go shopping with her mother
P38: although she was
CCACBACCAB
P39：
第一1.be proud of
2.can't wait to do sth.
3.be angry with sb
4.be polite to sb
5:on the 次ornerof
6:at the ticket counter
7:take awalk out side
8:Russia history
9:intyoduce sb
10:shake hands with sb
第二 lovely,glasses,strangers,swimming,across,angrily,to eat,worry
第三1:Does smells or
2:thin with
3:by bicycle
4:to go to
5:It took to get
6:turn right
P40: Beijing roast duck
Looks like
best neighbor
Have heard from
so many paintings
science lab
DBACD
P41： 第一animals in danger
take away
Nature reserve
In depth study
Peace life
Take... as
Magic show
A master of language
fall in love with
As you know
第二 to stop,not to kill,a few,difficult,scientist,Indian,use.
第三 southwest in china,less and less,is famous for,has already agreed to,says goodbye to,live on,difficult I don't know,happenning.
P42: too young of to invite to saw What does to do where and when
B,B,D,自杀,He found ideas there for his books and stories
P43 第一道at the moment from time to time And... compared And... compared On the first day On time get marry depend on
第二道rains possible moved across shoutting cloudy to swim chose
第三道what's the weather like mustn't be What must will you what’s baseball cap you must’n
P44: You'd better not visit Moscow in winter It no way to walk After the wedding married stop chatting wash up
CCAADDCDDC
P45：CADBBDCB
P45第二题：
1:cost
2:named
3:own
4:miss
5:rather
6:smell
7:provide
8:feeding
P46：Table tennis is my favorite game
You'd better to write down your mistakes in notebook
Do you think of the movie ?
His family took him around Europe
Everyone should practise speaking English every day
BCABDBCDBA
P47： pronounces davice counties musician latest enter lucky health
CADCCCADP48 DCDA
P48: around the world working to save Parents want him to drop
His parents want him to quit school Because of thousands of
Please tell--where is
DCDA

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