7.9-2x=3.4方程，这道题怎么做？_百度知道
7.9-2x=3.4方程，这道题怎么做？
您好，寒樱暖暖为你解答：解：2X=7.9-3.42X=4.5X＝2.25如果你认可我的回答，
请及时点击【采纳为满意回答】按钮，（或在客户端右上角评价点【满意】）你的采纳，
是我前进的动力! 也会给你带去财富值的。如有不明白，
可以追问，直到完成弄懂此题!==================================================采纳了，我可以【再帮你做一题或详细讲解此题】！！！
（永远有效，只要我在线，会第一时间处理你的追问）==================================================
高线数学老师
其他类似问题
为您推荐：
其他1条回答
解：7.9-2x=3.4
7.9-3.4=2x
2x÷2 = 4.5÷2
等待您来回答
下载知道APP
随时随地咨询
出门在外也不愁这道题怎么做：阅读理解。_百度知道
这道题怎么做：阅读理解。
阅读理解。
&&&& Hundreds of years ago, life was much harder than it is today. People didn't have modern machines. There was no modern medicine, either.
&&&& Life today had brought new problem. One of the biggest problems is pollution. Water pollution has made
our rivers and lakes dirty. It killed our fish and a our drinking water.&
&pollution makes us talk louder and become angry more easily. Air pollution is the most serious kinds of pollution. It's hard to all the living things in the world.
&&&& Cars, planes and factories all pollute our air every day,
(2) sometimes the polluted air is so thick that it is like a quilt(被子) over a city.
That kind of quilt is called smog.
&&&& Many countries are making rules to fight pollution. Factories must now clean their water before it is poured
away, they mustn't blow dirty smoke into the air.
&&&& We need to do many other things. We can put waste things in the dustbin and not throw it on the ground. We can go to work by bus or with our friends in the same car.(3) 如果开车的人少了,空气污染就少了.
1. 在横线上填入适当的单词. a. ________ b. ________(每空一词)
2. 将句子(2)译成汉语.
________________________________________________________ 3. 将句子(3)译成英语.
________________________________________________________
4. 找出Dirty water must be stopped from dumping into the river.的同义句. ________________________________________________________________ 5. 找出或写出能概括本文大意的句子. ________________________________________________________________
我有更好的答案
1. polluted Noise 2. 有时被污染的空气如此的厚,就像城市上空盖了一条被子. 3. If there are fewer people driving. / If fewer people drive cars, there will be less pollution. 或 & &The fewer people drive, the less pollution there will be. 4. Factories must now clean their water before it is thrown away. 5. Life today has brought new problems.
答案不唯一
其他类似问题
127人觉得有用
为您推荐：
阅读理解的相关知识
等待您来回答
下载知道APP
随时随地咨询
出门在外也不愁这道题怎么做：阅读理解. H
How many times have you told yourself that you can't do something? Well, probably you can do it．
Mary was eleven years old and she had something seriously wrong with her nervous syste_百度作业帮
这道题怎么做：阅读理解. H
How many times have you told yourself that you can't do something? Well, probably you can do it．
Mary was eleven years old and she had something seriously wrong with her nervous syste
这道题怎么做：阅读理解. H
&&& How many times have you told yourself that you can't do something? Well, probably you can do it．& &&&&Mary was eleven years old and she had something seriously wrong with her nervous system (神经系统).
She was not able to walk. In fact, she could hardly move. Though she believed that she had a good chance to get well again, the doctor said that few people could come back to normal after getting this disease. The little girl didn't give up after she heard this. When she was lying in her hospital bed,she believed that no matter what the doctors said, her going back to school was possible.& &&& She was sent to a health center. Every method was tried and none worked. However, she would not give
up. It seemed that nothing could beat her. The doctors all admired her and taught her to imagine that she could
make it. Every day Mary would lie there,doing her mental (心理的) exercise carefully.
&&& One day, as she was imagining her legs moving again, it seemed as if a miracle (奇迹) happened:the bed
began to move! "Look, what I'm doing! Look! I can do it! I moved!" she cried. At this moment everyone else in the hospital was frightened. They were crying, rushing for safety. And everything was falling. It was an
earthquake. But Mary believed that she did it, just as she had never doubted that she would get well. And now only a few years later, she's back in schoo1. You see, to such a person who can shake the earth, such a
disease is a small problem, isn't it?
根据短文内容判断正、误. (正确的涂“A”,错误的涂“B”)
(&&&& )1. Mary Was a 12-year-old girl who was not able to move. (&&&& )2. Though the girl was seriously ill, she believed that she would go back to school.
(&&&& )3. When Mary cried, other people in the hospital cheered for her.
(&&& &)4. The girl was strong, so she shook the earth by herself.
(&&& &)5. The story tells us that a strong belief (信念) can make a difference and that we should never give up.急求。。。这道题怎么做？_百度知道
急求。。。这道题怎么做？
下列不属于行政法调整的社会关系是（
） A．因镇政府不偿还农村信用社贷款而引起的社会关系 B．因消防部门作出火灾事故责任认定而引起的社会关系 C．因政府征收国有土地上的房屋而引起的社会关系 D．因行政机关招考公务员而引起的社会关系 这个题为什么不选B？消防部门属于行政单位？
你好，这是一道行政法题目！A项中，镇政府与农村信用社之间的法律关系是民事借贷关系 ，由民法调整！
怎么就算民事关系？怎么就算行政关系啊？分不清楚，大神能不能讲得通俗点儿？谢谢啊！
不要看到行下主体就以为是行政法律关系，要看他们在做什么，A中，镇政府向信用社贷款，这里两者是平等主体之间的关系，无论是谁，欠债还钱，天经地义，政府也不例外！类似的，如政府修办工楼，欠了施工方的钱没拿等！
哦哦，那B呢？消防部门是行政主体吗？嘿嘿……而且，B答案有点儿理解不了什么意思？
其他类似问题
为您推荐：
其他1条回答
我也认为是选B 哟
可是答案是A啊。。。。
等待您来回答
下载知道APP
随时随地咨询
出门在外也不愁这道题怎么做_百度知道
这道题怎么做
甲,乙两个车队进行合作运输,甲队运输货物的四分之一和乙队运输货物的五分之二共有340吨;甲队运输货物的四分之三和乙队运输货物的六分之一共有400吨.乙队运输的货物有多少吨
提问者采纳
乙队运输的货物为600吨，可以列方程组
怎么解要过程，好的采纳
能否用六年级的方法来做？亲，求了
甲队运输货物的四分之一和乙队运输货物的五分之二共有340吨，那么甲队运输货物的四分之三和乙队运输货物的五分之六共有1020吨，（同时乘以3），而甲队运输货物的四分之三和乙队运输货物的六分之一共有400吨，也就是说乙的五分之六和六分之一差620吨，五分之六减六分之一是三十分之三十一，就是说乙的三十分之三十一是620吨，所以乙等于620除以三十分之三十一，就是600。有点绕，多想想就好了。希望帮到你。
提问者评价
谢谢，我终于能睡觉了%&_&%
其他类似问题
为您推荐：
其他1条回答
这道题可以设二元一次方程组求解。解：设甲，乙两队分别有货x，y吨由题意可得（1/4）x+（2/5）y=340（3/4）x+（1/6）y=400联立，求解即可得到x，y的值
怎么解要过程，好的采纳
等待您来回答
下载知道APP
随时随地咨询
出门在外也不愁}