help me,2*3=.......
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Giá trị của biểu thức 1^2−2^2+3^2−4^2+5^2−6^2+....+99^2−100^2+101^2
HELP ME!!!HELP HELP ME ME
X - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
help me help me
X - 6 : 2 - (48 - 24) : 2 : 6 - 3 = 0
X - 3 - 24 : 2 : 6 - 3 = 0
X - 3 - 2 - 3 = 0
X = 0 + 3 + 2 + 3
X = 8
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X - 6 : 2 - ( 48 - 24 ) : 2 : 6 - 3 = 0
X - 6 : 2 - 24 : 2 : 6 - 3 = 0
X - 3 - 12 : 6 - 3 = 0
X - 3 - 2 - 3 = 0
X = 0 + 3 + 2 + 3
X = 8
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x - 6 ': 2- ( 48 - 24 ) : 2 : 6 - 3 = 0
x - 3 - 24 : 2 : 6 - 3 = 0
x - 3 - 12 : 6 - 3 = 0
x - 3 -2 - 3 = 0
x = 0 + 3 + 2 + 3
x =8
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a, x+3 /8= 2/x-3 help help me
\(\frac{x+3}{8}=\frac{2}{x-3}\)
\(\left(x+3\right)\times\left(x-3\right)=2\times8\)
\(x^2-3^2=16\)
\(x^2-9=16\)
\(x^2=16+9\)
\(x^2=25\)
\(x^2=\left(\pm5\right)^2\)
\(x=\pm5\)
Vậy x = 5 hoặc x = -5
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\(\frac{x+3}{8}=\frac{2}{x-3}\)
\(\Rightarrow\left(x+3\right)\left(x-3\right)=2.8=16\)
\(\Rightarrow x^2-3^2=16\)
\(\Rightarrow x^2=16+3^2=25\)
\(\Leftrightarrow\left[\begin{array}{nghiempt}x=5\\x=-5\end{array}\right.\)
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1. I want you to help me carry my bags.Can __________________________________________________________________?2. Do you want me to warm the milk for you?Shall _________________________________________________________________?3. I want you to help me with math problem.Will __________________________________________________________________?4. He climbed the tree because he wanted to get a better view.He climbed the tree so ____________________________________________________5. She is studying very...
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1. I want you to help me carry my bags.
Can __________________________________________________________________?
2. Do you want me to warm the milk for you?
Shall _________________________________________________________________?
3. I want you to help me with math problem.
Will __________________________________________________________________?
4. He climbed the tree because he wanted to get a better view.
He climbed the tree so ____________________________________________________
5. She is studying very hard because she doesn’t want to fail in the exam.
She is studying very hard in ________________________________________________
6. Harry left early because he didn’t want to miss the train.
Harry left early so as _____________________________________________________
7. He said nothing because he didn’t want to make his mother angry.
In order ________________________________________________________________
8. I’ll give you a map so that you can find the way all right.
I’ll give you a map so ______________________________________________________
9. I promise to pay you back on Saturday.
I’ll _____________________________________________________________________
10. I promise not to talk to Richard again.
I ______________________________________________________________________
1) she (help) ............. me If, I (help) ............. her
2) If she (not help) ............... me I (not help) .............. her
3)what ............ you (do) ............... If she (not help) ................. you
Giúp mik với mik đang cần gấp
1. will-help
2. doesn't-won't help
3. will-do-doesn't help
Tick cho mik nha
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1. She (help) ..will help.. if I (help) ..help.. her
2. If she (not help) ..doesn't help.. me I (not help) ..won't help.. her
3. What ..will.. you ..do.. if she (not help) ..doesn't help.. you?
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1) she (help) ....will help......... me if I (help) ...help.......... her
2) If she (not help) ..doesn't help.... me , I (not help) ...won't help....her
3)what ...will..... you (do) ....do.... if she (not help) ....doesn't help ...you
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3/5+5/7*3/5-9/7*3/5
help me help me
\(\dfrac{3}{5}+\dfrac{5}{7}\) x \(\dfrac{3}{5}-\dfrac{9}{7}\) x \(\dfrac{3}{5}\)
\(=\dfrac{3}{5}+\left(\dfrac{5}{7}-\dfrac{9}{7}\right)\) x \(\dfrac{3}{5}\)
\(=\dfrac{3}{5}-\dfrac{4}{7}\) x \(\dfrac{3}{5}\)
\(=\dfrac{3}{5}-\dfrac{12}{35}\)
\(=\dfrac{21}{35}-\dfrac{12}{35}=\dfrac{21-12}{35}=\dfrac{9}{35}\)
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A. Tìm số thực x biết
24-16(x-1/2)=23
help me ! help me! help me! help me!
24 - 16(x - 1/2) = 23
=> 16(x - 1/2) = 24 - 23
=> 16(x - 1/2) = 1
=> x - 1/2 = 1/16
=> x = 1/16 + 1/2
=> x = 9/16
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\(24-16(x-\frac{1}{2})=23\)
\(16(x-\frac{1}{2})=24-23\)
\(16(x-\frac{1}{2})=1\)
\(x-\frac{1}{2}=\frac{1}{16}\)
\(x=\frac{1}{16}+\frac{1}{2}\)
\(x=\frac{9}{16}\)
Vậy số thực x cần tìm là \(\frac{9}{16}\)
Chúc bạn hok tốt ~
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Help me do my homework !
Cho \(A=1+3+3^2+3^3+3^4+.....+3^{2012}\) và \(B=3^{2013}:2\)
Tính B - A
Can you help me ?
Ta có: 3A=3+\(^{3^2+3^3+3^4+3^5+...+3^{2012}+3^{2013}}\)
\(\Rightarrow\)3A-A=2A=(\(3+3^2+3^3+3^4+...+3^{2013}\)) - (\(1-3^{ }-3^2-3^3-3^4-...-3^{2012}\))
\(\Rightarrow\)2A=\(3^{2013}-1\)\(\Rightarrow\)A=\(\left(3^{2013}-1\right):2\)\(\Rightarrow\)B-A=(\(^{\left(3^{2013}:2\right)-\left(\left(3^{2013}-1\right):2\right)\Rightarrow}\)
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A = 1 + 3 + 32 +...+ 32012
3A = 3 + 32 + 33 +...+ 32013
3A - A = (3 + 32 + 33 +...+ 32013) - (1 + 3 + 32 +...+ 32012)
2A = 32013 - 1
A = \(\frac{3^{2013}-1}{2}\)
=> B - A = \(\frac{3^{2013}}{2}-\frac{3^{2013}-1}{2}=\frac{3^{2013}-\left(3^{2013}-1\right)}{2}=\frac{3^{2013}-3^{2013}+1}{2}=\frac{1}{2}\)
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Of course , I can help you .
A = 1 + 3 + 3^2 + 3^3 + ... + 3^2012
3A = 3 + 3^2 + 3^3 + ... + 3^2013
3A - A = 3 + 3^2 + 3^3 + ... + 3^2013 - 1 - 3 - 3^2 - ... - 3*2012
2A = ( 3 - 3 ) + ( 3^2 - 3^2 ) + ... + ( 3^2012 - 3^2012 ) + ( 3^2013 - 1)
2A = 0 + 0 + 0 + 0 +...+ 0 + 3^2013 - 1
2A = 3^2013 - 1
A = 3^2013 : 2 - 1/2
=> B - A = 3^2013 : 2 - ( 3^2013 : 2 - 1/2 )
=> B - A = 3^2013 : 2 - 3^2013 + 0,5
=> B - A = 0,5
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Kho 1 52250 kg , kho 2 chứa 37750 kg . Người ta chuyển một số tấn ngô từ kho 2 sang kho 1 nên lượng ngô ở kho 2 = 2/3 lượng ngô ở kho 1 .Hỏi người ta chuyển mấy tấn ngô từ kho 2 sang kho 1 ?
giúp mình nha chiều nay mình đi học rồi . Làm ơn
help me help me help me .
Làm đk 3 tick luôn.
Tích mik nha
Tổng số ngô của 2 kho là
52250+37750=90000kg
Số ngô ở kho 2 sau khi chuyển là:
90000:(2+3)x2=36000kg
Số ngô cần chuyển là:
37750-36000=1750kg
Bạn thử cộng 1750 với số ngô kho 1 để kiểm tra có đúng 3 phần không . 1 phần bằng 18000
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tổng số ngô 52250+37750=90000(kg)
sợ ngộ khó 2 khi chuyển 90000/5*2=36000(kg)
chuyển từ khó 2 37750-36000=1750(kg)
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