100 x 0 +1 =?
K
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TN
0
BT
17 tháng 1 2018
ta có
1+2+3+.........+x=5050
=>\(\frac{x.\left(x+1\right)}{2}=5050\)
=>x.(x+1)=5050.2
=>x.(x+1)=10100
=>x.(x+1)=100.101
=>x=100
9 tháng 8 2018
ta có : \(5^x.5^{\left(x+1\right)}.5^{\left(x+2\right)}\le\dfrac{100...0}{2^{18}}\) \(\Leftrightarrow5^{3x+3}\le\dfrac{10^{18}}{2^{18}}=5^{18}\)
\(\)\(\Leftrightarrow3x+3\le18\Leftrightarrow x\le5\) vậy \(x\le5\)
LD
6 tháng 7 2017
I.Each sentence below contains an error.Underline it and write the correct answer in the provided
Example0: There \(\dfrac{are}{ }\) an art gallery in our neighbourhood
0/is
1. I find carve=>carving eggshells boring because it takes a lot of time to complete one shell
2. My brother not goes=>doesn't go to class to learn how to paint
3. I take up=>took up this hobby when i came back home from the Art Gallery
4. I think playing volleyball interest=>interesting because it is a team game
5. In my opinion,more people played=>will play monopoly in the future
II.Fill each blank inthe following letter with a suitable word
Dear Mira,
Thanks for your letter.Now I'll tell you ABOUT my hobbies.My favourite hobby is skitting.It's trange,isn't it? My mother TAUGHT me to knit two years ago.Now I can knit scraves and seaters.It's great when I can GAVE them to my relatives and friends as gifts.Knitting is also imaginative AS you can knit anything you can imagine of.Besides,it is quite cheap.You only NEED a pair of needles and some wool.
I'm sending you a scarf next month.I'm knitting it.I hope you'll like it.
Best wishes,
Vy
100 x 0 + 1 = 0+1
= 1
k mk nha
=1 nhé bn