làm cho mình bài 3 với mình đang cần gấp
K
Khách
Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.
Những câu hỏi liên quan
M
0
M
2
18 tháng 12 2021
cảm ơn chị rất nhiều nhưng em cần các bước giải nữa chị ạ
HT
4
20 tháng 4 2021
Bài 1:
a)
a: Ta có: \(\dfrac{1}{7}>0\)
mà \(0>\dfrac{9}{-4}\)
nên \(\dfrac{1}{7}>\dfrac{9}{-4}\)
20 tháng 4 2021
Bài 1:
a) So sánh:
b) \(\dfrac{2}{5}=\dfrac{2\cdot7}{5\cdot7}=\dfrac{14}{35}\)
KA
1
21 tháng 10 2021
Bài 3:
1: Ta có: \(P=\dfrac{\sqrt{x}+1}{\sqrt{x}-2}+\dfrac{2\sqrt{x}}{\sqrt{x}+2}-\dfrac{5\sqrt{x}+2}{x-4}\)
\(=\dfrac{x+3\sqrt{x}+2+2x-4\sqrt{x}-5\sqrt{x}-2}{\left(\sqrt{x}-2\right)\left(\sqrt{x}+2\right)}\)
\(=\dfrac{\sqrt{x}}{\sqrt{x}+2}\)
NT
Nguyễn Thị Thương Hoài
Giáo viên
VIP
2 tháng 6 2023
A = \(\dfrac{1}{2}\) + \(\dfrac{1}{4}\) + \(\dfrac{1}{8}\)+ \(\dfrac{1}{16}\) + \(\dfrac{1}{32}\) + \(\dfrac{1}{64}\)+......+\(\dfrac{1}{1024}\)
A \(\times\)2 = 1 + \(\dfrac{1}{2}\) + \(\dfrac{1}{4}\) + \(\dfrac{1}{8}\) + \(\dfrac{1}{16}\) + \(\dfrac{1}{32}\)+\(\dfrac{1}{64}\)+...+\(\dfrac{1}{512}\)
A\(\times\)2 - A = 1 - \(\dfrac{1}{1024}\)
A = \(\dfrac{1023}{1024}\)
NT
Nguyễn Thị Thương Hoài
Giáo viên
VIP
2 tháng 6 2023
B = \(\dfrac{1}{1\times2}\)+\(\dfrac{1}{2\times3}\)+\(\dfrac{1}{3\times4}\)+\(\dfrac{1}{4\times5}\)+...+\(\dfrac{1}{98\times99}\)+\(\dfrac{1}{99\times100}\)
B = \(\dfrac{1}{1}\) - \(\dfrac{1}{2}\) + \(\dfrac{1}{2}\) - \(\dfrac{1}{3}\)+ \(\dfrac{1}{3}\)-\(\dfrac{1}{4}\)+\(\dfrac{1}{4}\)-\(\dfrac{1}{5}\)+...+\(\dfrac{1}{98}\)-\(\dfrac{1}{99}\)+\(\dfrac{1}{99}\)-\(\dfrac{1}{100}\)
B = 1 - \(\dfrac{1}{100}\)
B = \(\dfrac{99}{100}\)
15 tháng 1 2022
đề 15, 16, 17 á nếu được thì làm hết những bài mình chụp lun còn nếu không thì lầm 3 đề đầu tiên hoặc câu nào biết thì làm
4 tháng 10 2018
I was born and grown up on the poor land in Duc Tho district, Ha Tinh province. That’s where deeply attaches to me 24 years of life. If anyone who asks me that “What’s the thing your most proud of?” .I will answer that’s my hometown. Duc Tho is the land poor where the people live by rice cultivation, breeding, and fishing. Although the life is very difficult, but the people is very friendly, and studious. In Duc Tho, there is a Tung Anh village where called “Doctor village”. Duc Tho is also the home of Tran Phu Secretary General, and marked many memories of the great leader Ho Chi Minh.
If you come to Duc Tho, you will feel many interesting things, visiting Tran Phu tombstone, La Giang dyke, rowing on La driver, and enjoying the traditional songs. In the evening, they can enjoy a special food which is “mussel rice” – just only eat one time, you will never forget.
Beautiful and unobtrusive! Duc Tho always tries to grow, and to improve the life of people, but keeping the traditional culture.
Hk tốt
DA
4 tháng 10 2018
My home village is now different from the village in my father's story. in his story, my village is very poor.
Everyone live a hard life that time. People lack of food, of money. Now, it is different. People don't live a hard life anymore. They have enough food, enough money, everyone got a house, and many more things. The only things that doesn't change is sentiment. Everyone always be very happy. They live together, help each other when they need, that is a luxury.
That makes my village a wonderful place for everyone. People are just farmer, but they solidarity in the face of penury. And when they have money in their hands, they still solidarity they are friendly with others, they are helpful, they are good people. That's about people.
Landscape is still the old days. That river, that mountain. Nature is harmony with people. People live with nature, people product things of nature, and nature always open-handed with people, give them resource for them to build their house. That is what people seek, and they live with it very well.
That's all I can say about my home village, in my opinion, my village is a wonderful place. War does not determine who is right, only who is left:" Ask not what your country can do for you but what you can do for your country"
k mk đi rồi mk đưa link cho
Tổng số quả luc đầu là
\(20+25+30+35+40=150\) quả là 1 số chia hết cho 3
Sô quả còn lại có số cam gấp 2 lần số xoài nên số quả còn lại cũng phải là 1 số chia hết cho 3, nên rổ xoài đã bán cũng phải là 1 số chia hết cho 3
Vậy rổ xoài đã bán là rổ đựng 30 quả
Số quả còn lại là
150-30=120 quả
Số cam lúc đầu là
(120:3)x2=80 quả