英語數學題
1 How can you make 6 out of three 7's ?
2 How can you make 6 out of three 5's ?
3 How can you make 1,000 out of eight 8's ?
4 when do 2 and 2 make more than 4's ?
5 An elephant before two elephants,an elephant behind two elephants,an elephant between two elephants.How many elephants?
1 How can you make 6 out of three 7's ?
7-7/7=6
2 How can you make 6 out of three 5's ?
5+5/5=6!
3 How can you make 1,000 out of eight 8's ?
8+8+8+8+88+888=1000!
4 when do 2 and 2 make more than 4's ?
Answer:When you are wrong!
5 An elephant before two elephants,an elephant behind two elephants,an elephant between two elephants.How many elephants?
Answer:There are 4 elephants.
1.The sum of n different natural numbers is less than50.the greatest possible value of n is----
2.Let a be the average of all odd prime numbers less than 50.The inreger,most close to a is----
3.If two even natural numbers x,y satisfy equation x的平方加100等於y的平方,x大於y then x乘y等於----
1. Since there are some controversies, I suppose 0 does not belong to natural numbers in this case. The answer is quite straight foward, 1+2+3+4+5+6+7+8+9=45. If we add 10, then the sum will exceed 50. So the greatest possible n is 9.
2. First of all, you can list all the odd prime numbers less than 50:3 5 7 11 13 17 19 23 29 31 37 41 43 47. Add them up, and calculate the average. The average a is equal to 23.3. Therefore the integer, most close to a is 23.
3. x^2+100=y^2,then (y-x)(x+y)=100, since x and y are natural numbers, x+y>0, y should be larger than x. I am afraid there is either something wrong with the problem or a typing mistake.
You can show me the original version of the problem 3.
The principal of a new elementary school sounded the alarm for fire training. It took a very long time to empty the building. It was evident that the schoolchildren were at risk. The school has three exterior doors. The main door is served by a wide corridor, the side door by a narrower corridor, and the rear door by a dog-legged corridor.
By experimenting with the classrooms adjacent to each of these doors, it was determined that:
About 1.5 minutes elapse between the announcement of an emergency and the first departure through each door.
Students and staff can file through the doors at these rates approximately 55 per minute through the main door, 30 per minute through the side door, and 25 per minute through the rear door.
About 450 persons are inside the building.
Calculate for the problem the minimum time until the building empties
a.4.1
b.1.5
c.5.3
d.5.6
e.8.18
answer:D
㈡ 英語數學題 簡單
您好！
我為你進行題目講解，【Fresh
asparagus
costs
$3.49
per
pound
and
fresh
snow
peas
cost
$1.89
per
pound
at
the
vegetable】意思為【新鮮的蘆筍的價格是每磅3.49美元，新鮮的雪豌豆的價格是每磅1.89美元】||【Caitlyn
buys
1.8
ibs.
of
asparagus
and
2.45
ibs
of
snow
peas】意思為，【一個叫『Caitlyn』購買了1.8磅的蘆筍和2.45磅的雪豌豆】注意點：
英制重量單位，復數形式，發音pounds（鎊）。
answer:3.49*1.8+1.89*2.45=$10.9125
希望您及時採納我們的回答，祝賀你學業成功，歡迎追問！謝謝
㈢ 英語數學題（要算式）
有年齡各不相同的四個女孩和兩個男孩。最大的13歲，最小的7歲，最大的女孩比最小的男孩大4歲，最大的男孩比最小的女孩大4歲，問最大的男孩幾歲？
若最小的是男孩7歲，則最大的女孩11歲，那麼最大的男孩13歲，最小的女孩9歲。因為有4個女孩，年齡各不相同，而9、10、11隻能是三個女孩的年齡。與題不符。
所以最小的應該是女孩，年齡7歲，最大的男孩比最小的女孩大4歲，所以，最大的男孩有11歲。
㈣ 英語數學題（一共2道數學題）
正方形ABCD的周長的尺寸等於10厘米。段MN的長度等於5厘米和三角形MNC是等腰三角形。找回到五邊形ABNMD的區答域。
在下面的三角形圖中ABC是等腰直角三角形。 AM是垂直於BC和MN是垂直於AC。找到三角形跨國公司的面積與三角形ABC的7815622的比例
㈤ 英文數學題
設減制掉的正方形邊長為a，則盒子長為11-2a，寬為4-2a，高為a
所以體積v(a)=a(4-2a)(11-2a)=4a³-30a²+44a
=>v'(a)=12a²-60a+44，v''(a)=24a-60
令v'(a)=0，得12a²-60a+44=0，解得a=(15±√93)/6
∵4-2a>0，∴0<a<2，而v''((15-√93)/6)=-4√93<0
∴v((15-√93)/6)為其極大值點
而v(0)=v(2)=0<v((15-√93)/6)
∴盒子的最大體積為v((15-√93)/6)≈18.2
㈥ 英語數學題
(1)B
(2)B
(3)C
(4)C
(5)C
㈦ 英語數學題
^1.The sum of n different natural numbers is less than50.the greatest possible value of n is----
2.Let a be the average of all odd prime numbers less than 50.The inreger,most close to a is----
3.If two even natural numbers x,y satisfy equation x
答案：
1. Since there are some controversies, I suppose 0 does not belong to natural numbers in this case. The answer is quite straight foward, 1+2+3+4+5+6+7+8+9=45. If we add 10, then the sum will exceed 50. So the greatest possible n is 9.
2. First of all, you can list all the odd prime numbers less than 50:3 5 7 11 13 17 19 23 29 31 37 41 43 47. Add them up, and calculate the average. The average a is equal to 23.3. Therefore the integer, most close to a is 23.
3. x^2+100=y^2,then (y-x)(x+y)=100, since x and y are natural numbers, x+y>0, y should be larger than x. I am afraid there is either something wrong with the problem or a typing mistake.
You can show me the original version of the problem 3.
㈧ 用英語出的數學題 20道
1.
40%
of
the
students
in
a
school
are
boys.lf
there
are
240
boys,
how
many
student
are
therein
the
school?
2.
a
boy
has
finished
reading
160pages
of
a
story
book
and
he
finds
that
is
20%
of
the
book
left.how
many
pages
are
there
in
the
book?
3.
Among
the
800
people,
70%
like
swimming.How
many
people
like
swimming?
1、學校40%的學生是男孩，如果這里有240個男孩，那麼學校有多少學生？
240/40%=600
2、一個男孩看完了160頁故事書，他發現還有20%沒看，問這本故事書多少頁？
160/（1-20%0）=200
3、800人中，70%的人喜歡游泳，請問有多少人喜歡游泳？
800*70%=560
㈨ 英語數學題
去satonline看看 吧，有真正的模擬卷可以做
㈩ 英語數學題
遇到真正不懂的問題來聯自系還是去詢問老師，讓老師面對面地給你詳細的解答，在網上答案也只能得到答案的本身，基本無法得到問題與答案的緣由，還是老師比較能為你解釋清楚。老師的職責就是傳道授業解惑，所以建議學習上遇到難題最好標記下來，等到得到老師詳細的解答後再進行自我消化，這樣學到的知識才能是你自己的。