这道这道数学题怎么做做???

这道题怎么做?_百度知道
这道题怎么做?
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作图,一般是要以箭头标示出磁力线;n  把金属棒作为质点;n  图成;n  2:大概思路就这样,那么。&#92,只是以电阻元件出现;r&#92,可以按照课本上相关公式计算一些东西;n  最后呢;依据定则:这一题;r&#92,两者是作用力和反作用力)=;r&#92;“在接通电路瞬间;n  结束语这里不能上传附件;r&#92。——当然。&#92,后边就好办了,或代替你思考。&#92;”(很重要的一句:&#92,它所受到垂直水平放置的导轨,对它受力分析;n  题目中的物体只有平行金属导轨和一个金属棒,我要说的是,安培力的方向即通过定则指向的方向,即磁力线与金属棒的夹角要标示出来;r&#92,很容易画出来。&#92。&#92,G=N,它所受到重力G=mg竖直向下;n  图画好是关键,在接通瞬间;n  3,你自己来啊,金属棒处于平衡状态&#92。&#92;r&#92,且&#92,而不是对你误导,这个在物理课本中常见。&#92。&#92、安培力的大小和方向,但要用符号表示,并未计算通电金属棒所受到的磁场力,不要乱,我希望只能对你启发,安培力大小就是I=U/(R+r)。&#92,无非就是三条线,因为不需要。&#92,为下边的等式做铺垫)、对轨道的压力;&#39:&#92;n  这时候;r&#92;r&#92,我们知道;r&#92,具体计算,与解题无关;n  安培力的大小,竖直向上的支持力N=N&#92;r&#92;n  1,所以,通电金属棒所受到的磁场力的方向发生在水平方向;r&#92?(待求);r&#92,你可以把其他一些数据一并标上;(即题中所求,如下,做成图的话也没有专门软件,我提供个思路吧;n  其次
这是数学题
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出门在外也不愁这道题怎么做???_百度知道
提问者采纳
第二篮就有3x个根据题意,第一篮的如果有x个,所以有
x+3x+6x=80
x=8所以第一篮有8个,第三篮就有6x个,第三篮有48个,第二篮有24个
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其他4条回答
第一篮有水梨x个,第二篮有水梨3x个,第三篮有水梨2·3x个
80/(1+1*3+1*3*2)=80/10=8第一蓝:1*8=8第二蓝:1*3*8=24第三蓝:1*3*2*8=48
第一篮 x个
x+3x+6x=80
x=8 第一 8个 第二 24个 第三48个
设第一篮水梨为x个则x+3x+6x=808x=80x=8第二篮水梨个数为3x=3*8=24(个)第三篮水梨个数为6x=6*8=48(个)
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出门在外也不愁这道题怎么做?_百度知道
这道题怎么做?
D.eyes6.running
D.pleased8A,he said &#39.interested
B.sleep5.careful
C.A.A.want
D.A.sleep4A man was sitting in the doctor&#39.A.hope
C;t even (---------)m out there in the football field(-------)after a flying ball .My life has (----)been a good one since I became (-----------)in football and it is gettI&#39?&#39. I can &#39.books
D.When I close my (------).A. 1.A.surprised
D, &#39, try to (-------)about something else .family
C;The doctor sat back and said.catch
D.waiting7,I&#39. When I wake up.door
B, I&#39.problem
C.A,you (------------)to do your best not do dream about football.have
B. Before you are falling asleep.decide9;m more (---------)than I was when I went to bed. what am I going to do.write
D.journey 2.A; the man shouted &#39.sport
D?&#39;Fplease help me.A;ll (------------)the ball.playing
C.&#39; &#39.think10;s .worried
B.often3.work
D.Try to think that you are
at a party and some one
going to give you seAre you crazy
提问者采纳
All (miss)the ball.&#39,he said &#39. what am I going to do.When I close my (eyes);please help me:A man was sitting in the doctor&#39;t even (sleep)m more (tired)than I was when I went to bed?&#39;I&#39;First of
all ,I&#39.My life has (never)been a good one since I became (interested)in football and it is getting worse and worse . I can &#39. Before you are falling asleep,you (have)to do your best not do dream about football,你少发了第一个括号?&#39. When I the man shouted &#39; &#39, &#39, I&#39,从2到9填空如下.1-5
, try to (think)about something else ,只有9个括号啊;The doctm out there in the football field(running)after a flying ball 楼主.Try to think that you are
at a party and some one
going to give you several milion dollars
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the man shouted &#39. When I wake up. Before you are falling asleep.When I close my (------)?&#39;I&#39;ll (------------)the ball所以应该是你文章打错了吧= =
我有这作业A man was sitting in the doctor&#39;s office, &#39.Try to think that you are
at a party and some one
going to give you sehe said &#39.He was telling the doctor about his(——-);please help me,you (------------)to do your best not do I like football,doctor. what am I going to do. I can &#39;First of
all .&#39,&quot?&#39;Are you crazy, I&#39.My life has (----)been a good one since I became (-----------)in football and it is gettm out there in the football field(-------)The doctt even (---------)well at night ,& &#39;m more (---------)than I was when I went to bed, try to (-------)about something else ,I&#39
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出门在外也不愁谁知道这道题怎么做?_百度知道
谁知道这道题怎么做?
谁知道这题怎么做?剃须刀有刀片和刀架组成。某时期,甲、乙两厂家分别生产式老剃须刀(刀片不可更换)和新式剃须刀(刀片可更换),有关销售策略策略如下表示:某段时间内,甲厂家销售了8400把剃须刀,乙厂家销售的刀片数量是刀架数量的50倍,乙厂家获得的利润是甲的两倍,问这段时间内,乙销售了多少把刀架?多少片刀片?
老式剃须刀
新式剃须刀
刀架 刀片售价
0.55元成本
0.05元谢谢!!!
甲厂每销售1剃须刀的利润是2.5-2=0.5元, 所以甲厂家销售了8400把剃须刀是0.5*元乙厂家获得的利润是甲的两倍,所以乙厂获得的利润是0元据题乙厂家每销售一个刀架亏损4元,每销售一个刀片赚0.5元设乙厂家销售了X个刀架,据题乙厂家共销售了50*X个刀片所以50*X*0.5-4X=8400,解方程得X=400所以乙厂家销售了400个刀架,销售了400*50=20000个刀片
1、5+3+2=10 六(1)班送出:200×3×5/10=300(只) 六(2)班送出:200×3×3/10=180(只) 六(3)班送出:200×3×2/10=120(只)
2、×7/20=2860(顶)
3、2/5÷(1+2/5)×3/10=3/35 1-21/50=29/50 1÷(1+2/5)×29/50=29/70 3/35+29/70=1/2
4、甲剩下;1-3/5=2/5 乙剩下:1-3/4=1/4 甲的1/5与乙的1/4相等:2/5÷2=1/5, 那么...
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