2-1/8-1/12-1/16=83/48

k nha

Học tốt

^_^

\(=\frac{83}{48}\)

học tốt nhé

đúng thì ủng hộ.

Diện tích hình tròn đó là : 3 . 3 . 3, 14 = 28, 26cm²

Đ/s: 28, 26cm²

Bài giải:

S của hình tròn có bán kính là  3 cm là:

       3 . 3 . 3,14 = 28,26 ( cm3 )

Chúc bạn học tốt!

một hs ăn hết trong

120*20=2400 ngày

nhà trường có

120+30=150 người

sớm hơn dự tính số ngày là

20-[2400:150]= 4 ngày

Ăn hết sớm hơn dự tính số ngày là :

120 x 20 : ( 120 + 30 ) = 16 ( ngày ) 

Đáp số : 16 ngày

Everyone's school days have the memories they can cherish and treasure for life. School days are the most joyful and funfilled with many mysteries to solve and many fights to resolve.
In my school days, I had many friends and some foes. We used to gossip and play and some times fight over silly things. I had two best friends. They were very nice and loyal to me. Every teacher in my school d us, although we weren't brilliant students in fact were average ones but still we respected our elders and loved our youngers. Since my childhood, I've never been complaining to anyone for anything, actually I never needed to since I had everything I needed or wanted.I miss my school days since it was all about having fun and no competetions. The most exciting part used to be 'the exchange of lunch boxes'. Usually me and my best friend d each other's lunch and soon developed a habit of exchanging lunches. Apart from sharing lunches, we also used to share our silly secrets.
We used to play our own created games and draw for fun. We also used to have bets and treats for rewards on childish things but we never played pranks on anyone. My childhood was indeed really amazing and simple. We found fun in subtle but beautiful things. It was surely surrealis but was also hilarious at times. In my school days, we sometimes used to play in the rains, make paper boats, eat ice-creams and enjoy every drop of water and after getting all bathed up in water we used to have hot chocolate drinks.
These were some of the stuff of my school and childhood, as I remember them, which I cherish today as sweet memories. I wish God makes everyone's childhood days as carefree and jovial as mine.

Diện tích của hai mặt đáy là: 10x14x2=280 (cm²)

Diện tích xung quanh của hình hộp đó là: [(14+10)x2]x8=384 (cm²)

Diện tích số bìa dùng làm hộp là: 280+384+70=734 (cm²)

                                  Đ/S: 734 cm²

3,4<4,56

9,7<9,78

10,87=10,8700

huhu,no biết

0,1<0,11<0.8<0.9

0,10 ; 0,11 ; 0,8 ; 0,9

Chúc bạn học tốt!!!

a, Lâu >< Nhanh

b, Thông minh >< Đần độn

 Chúc bn hok tốt

    # BTS #

a) x - 5/7 - 13/14 = 1

x- (5/7+13/14) = 1

x- 23/14 = 1

x = 37/14

b) \(\frac{3}{5}+x+1\frac{1}{5}=\frac{11}{3}\)

\(\frac{3}{5}+x+\frac{6}{5}=\frac{11}{3}\)

\(\frac{9}{5}+x=\frac{11}{3}\)

x = 28/15

\(\frac{3600}{\frac{\left(5x+335\right)}{x}}=50\)

\(\frac{5x+335}{x}=72\)

=> 5x + 335 = 72x

=> 335 = 72x-5x

335 = 67x

x = 5