a, 2,345

b, 0,34

c, 0,05

d, 0,5

\(\dfrac{15,6\times250-26\times78:0,5}{15,6\times3,2\times2,4\times2,6}\)

\(=\dfrac{15,6\times250-26\times78\times2}{15,6\times3,2\times2,4\times2,6}\)

\(=\dfrac{3900-4056}{311,5008}\)

\(=\dfrac{-156}{311,5008}\)

15,6×3,2×2,4×2,615,6×250−26×78:0,5​

=15,6×250−26×78×215,6×3,2×2,4×2,6=15,6×3,2×2,4×2,615,6×250−26×78×2​

=3900−4056311,5008=311,50083900−4056​

=−156311,5008=311,5008−156​

Phân số chỉ lượng vải chiều bán so với tổng độ dài vải ban đầu là:

\(\dfrac{3}{8}\times\left(1-\dfrac{3}{11}\right)=\dfrac{3}{11}\left(tấm.vải.ban.đầu\right)\)

Phân số chỉ lượng vải còn lại sau 2 lần bán so với tổng độ dài vải ban đầu là:

\(1-\left(\dfrac{3}{11}+\dfrac{3}{11}\right)=\dfrac{5}{11}\left(tấm.vải.ban.đầu\right)\)

Tấm vải ban đầu dài:

\(20:\dfrac{5}{11}=44\left(m\right)\)

Đáp số: 44 mét vải

giai lun a

\(7\dfrac{19}{100}=7+\dfrac{19}{100}=7+0,19=7,19\\ Chọn.A\)

Em viết đủ đề nha

thiếu đề bn ơi

Hi Tom,
I hope this email finds you well. I wanted to share an exciting opportunity with you – the upcoming Ok Om Bok Festival! It's a vibrant and culturally rich event that celebrates the traditional harvest season.
Participating in the festival will give you a chance to immerse yourself in the local culture, witness mesmerizing rituals, and enjoy delicious traditional foods. The festival's colorful atmosphere and warm community spirit make it a unique experience.
Don't miss out on this fantastic cultural celebration! Your presence would undoubtedly add to the festive cheer. Looking forward to seeing you there!
Best regards,

Xuan Thanh

Dear Tom,

I'm happy to hear that you are going to join the Ok Om Bok Festival in Soc Trang Province. As I know, Ok Om Bok Festival, also called Moon Offering Festival is traditional folk festival has existed for a very long time of Khmer people in Mekong Delta, especially 2 Tra Vinh and Soc Trang Provinces. 

Here, I have some advice for you to dos and don'ts at that festival. First, I think you should wear trainer or shoes and comfortable clothes because maybe you must be walk a lot. And then, remember to bring some bottle of water, it will be hot in Soc Trang so you will get thirsty.

Also, I should remind you that you must not to litter on the ground or run away from your father. It's an big festival so it will be crowded, you should be careful to not get lost. Anyway, I hope you will have a great time with your dad and enjoy the festival.

\(\left|\dfrac{2}{3}-1\right|-\dfrac{5}{2}.\sqrt[]{\dfrac{4}{25}}=\left|-\dfrac{1}{3}\right|-\dfrac{5}{2}.\dfrac{2}{5}=\dfrac{1}{3}-1=-\dfrac{2}{3}\)

-2/3

\(\dfrac{6}{5}\cdot\sqrt{\dfrac{25}{16}}-\left(\dfrac{3}{4}\right)^2:0,25\\ =\dfrac{6}{5}\cdot\dfrac{5}{4}-\dfrac{9}{16}\cdot4\\ =\dfrac{3}{2}-\dfrac{9}{4}\\ =-\dfrac{3}{4}\)

\(\dfrac{6}{5}\cdot\sqrt{\dfrac{25}{16}}-\left(\dfrac{3}{4}\right)^2:0,25\)

\(=\dfrac{6}{5}\cdot\dfrac{5}{4}-\dfrac{9}{16}:\dfrac{1}{4}\)

\(=\dfrac{6\cdot5}{5\cdot4}-\dfrac{9\cdot4}{16}\)

\(=\dfrac{6}{4}-\dfrac{9}{4}\)

\(=\dfrac{3}{4}\)

5 ha=0,05km2

34dm2= 0,34 m2

5dm= 0,5m

5 ha=0,05km2

34dm2= 0,34 m2

5dm= 0,5m

Đây nhá bạn

3,8 có hàng phần mười lớn nhất => 3,8 lớn nhất