学校组织夏令营活动,老师再分配宿舍时发现

①由分析知，该校报名参见活动的总人数为：25÷50%=50（人）[或15÷30%=50（人）]；②报名参加乙组的人数为：50-15-25=10（人）．条形统计图如下：故答案为：50，25÷50%，10

DearEditor,IhavejoinedanEnglishsummercamprecentlybutIamverydisappointedbecausetheorganiserdidn'tkeep

题目不完整再问：哪儿？再答：大客车：座位数（个）：每天租金（元）：小客车：座位数（个）：每天租金（元）????再问：这个是我不知道的再答：啊？学校利用暑假组织四年级120名学生和5名教师参加夏令营活动

设租用小帐篷X个,大帐篷Y个.则列出如下方程组.10x＋22y＝120①设租用帐篷总花费为z元.z＝60x＋100y②一式带入二式可得到z＝720-32y③由三式可知y取最大时花费最小.若全部租用大帐

五年级采集相当于原计划的（80%）；六年级实际采集的相当于原计划的（110%）,超过计划的（10%）.（）里填百分数.如有不明白,可以追问如有帮助,记得采纳,谢谢

InBeijingforfivedays:TheveneratedChinesehistoryhasstrewnthelandofBeijingwithsitesofculturalandhistor

...接上iamamiddleschoolstudent,MynameisTom,iamfromNo1middleschool.iwanttojionthisactivitybecauseiwantt

Apossibleversion:DearSir/Madam,IhavejustreturnedfromtheEnglishSummerCampatyourSchoolofLanguage,andI’

设女生人数为x人,男生人数为y人.根据题意得x-5=y+52(y-4)=x+4化简得x-y=102y-x=12解得x=32y=22答：略

Dearheadmaster,Hello.ThisisZhanghong,astudentofClassxxx,Gradexxx.Iamgladtohearthattherewillbeasummer

x+(x+1)+(x+2)+(x+3)+(x+4)=5x+10=75解得x=13,所以13号到17号或75/5=15,15为中间的一天

Thissummerholiday,IwilltakepartinthesummercamptoLondon,Britain,organizedbyourschool.Wewillbegivenach

Hello,Iamzhang,IhopeIcanjoinintotheUnitedStatesthisactivity,andIwishIlivedinafriendlyfamily.Myhobbyi

Ourschoolwillholdasummercampthissummerholiday.ItisnamedGoToAmericanFamily.IhopethatIcanhaveanopportu

说明这个活动的危险性极低有各种安全措施然后不要太过夸大自己的能力这样会让他们更担心比方说你没吃的了怎么办就说有实时监控系统会有老师来帮你别说你不怕没事之类的···

hithereiamineterestedinursummeractiviesiwanttojoin.iwanttopayudoulethemoney,soundsgood?justletmeinan

甲出租车需要费用20*X乙出租车需要费用24*(X-5)甲车费-乙车费=20x-24(x-5)=120-4x当120-4x＜0,即x＞30时,甲车费＜乙车费当120-4x＝0,即x=30时,甲车费=乙

iamamiddleschoolstudent,MynameisTom,iamfromNo1middleschool.iwanttojionthisactivitybecauseiwanttoimpr

DearprincipalI'dliketojointhesummercamp"comeintotheAmericanfamily"andmyreasonsareasfollows.Tobeginwi

Dearfriends,I'mgladtointroducemyselftoyou.MynamesZhangBin.I'mafifteen-year-oldChineseboy.Iliveinabig