K
Khách

Hãy nhập câu hỏi của bạn vào đây, nếu là tài khoản VIP, bạn sẽ được ưu tiên trả lời.

15 tháng 5 2024

C.3 nhe ban

15 tháng 5 2024

C

15 tháng 5 2024

Tác giả muốn chúng ta càng thêm yêu quý mùa xuân trên quê hương hơn.

15 tháng 5 2024

Tác giả muốn chúng ta luôn luôn yêu thiên nhiên và mùa xuân

Read the text carefully. For each question, choose the correct answer. Recycling has a number of benefits. First, recycling results in less rubbish, so it saves space in landfills. Second, if we use materials again, we can take fewer resources from the Earth. Third, recycling materials produce less pollution, so it helps to keep our environment clean. So, what can you do? Be sure to recycle everything you can at home and at school. Always drop your used aluminum cans and plastic bottles in a...
Đọc tiếp

Read the text carefully. For each question, choose the correct answer.

Recycling has a number of benefits. First, recycling results in less rubbish, so it saves space in landfills. Second, if we use materials again, we can take fewer resources from the Earth. Third, recycling materials produce less pollution, so it helps to keep our environment clean.

So, what can you do? Be sure to recycle everything you can at home and at school. Always drop your used aluminum cans and plastic bottles in a recycling bin. Remember to put paper items like the newspaper, cereal boxes, and homework pages into the recycling bin, too. Besides, find creative ways to reuse old items before throwing them away.

Here are some fun facts about recycling. Old paper can be recycled around seven times. Glass is one of the best recycling materials. Clear glass can be recycled over and over again. In 2009, the United States recycled around 30% of all its waste and they found ways to recycle around 7 million tons of metals.

Question 29:

What is NOT mentioned as a benefit of recycling?

a.It saves the Earth's resources.      b.It helps to protect the environment.

c.It makes landfills become safer places.     d.It reduces the amount of rubbish.

2
15 tháng 5 2024

mọi ngươi giúp tôi với ạ

15 tháng 5 2024

Chọn B nhé

Lợi ích 1 nói về đáp án C

Lợi ích 2 là đáp án A

Lợi ích còn lại là D

Tỉ số giữa số bài loại khá so với tổng số bài là:

\(\dfrac{2}{5}\cdot50\%=\dfrac{2}{5}\cdot0,5=0,2=20\%\)

Tỉ số giữa số bài loại trung bình so với tổng số bài là:

100%-50%-20%=30%=3/10

Số học sinh khối 6 là \(12:\dfrac{3}{10}=12\cdot\dfrac{10}{3}=40\left(bạn\right)\)

NV
15 tháng 5 2024

Đổi 50%=1/2

12 bài trung bình chiếm số phần bài thi là:

\(1-\left(\dfrac{1}{2}+\dfrac{2}{5}\right)=\dfrac{1}{10}\)

Số học sinh khối 6 là:

\(12:\dfrac{1}{10}=120\) (học sinh)

16 tháng 5 2024

Áp dụng công thức:

\(\dfrac{a}{b}\)  > \(\dfrac{a+m}{b+m}\) (a; b;m \(\in\) N*; a > b)

ta có:  \(\dfrac{13579}{34567}\) > \(\dfrac{13579+2}{34567+2}\) = \(\dfrac{13581}{34569}\) > \(\dfrac{13580}{34569}\)

           Vậy \(\dfrac{13579}{34567}\) > \(\dfrac{13580}{245679}\)

 

Sửa đề: \(M=\dfrac{3}{1\cdot4}+\dfrac{3}{4\cdot7}+...+\dfrac{3}{2022\cdot2025}\)

\(=1-\dfrac{1}{4}+\dfrac{1}{4}-\dfrac{1}{7}+...+\dfrac{1}{2022}-\dfrac{1}{2025}\)

\(=1-\dfrac{1}{2025}=\dfrac{2024}{2025}\)

15 tháng 5 2024

đề bài là gì bạn nhỉ

15 tháng 5 2024
At the end of the school year, to celebrate memorable moments with friends before summer vacation, the school organizes a camp for all students. Today, we will spend a camping trip at Yen So park, only 5 km from school. Early in the morning at 6:30, everyone gathered in the school yard. My mother took me there, bringing many supplies, especially water and snacks like flowers, fruits and candy. At 7 o'clock we set off. It only took 15 minutes, we arrived at Yen So park. Large space, lake and cool green trees create fresh air. The teachers divided into groups and announced the schedule, we started setting up tents. The large tent, comfortable for six people, is decorated with balloons and flashing lights, creating a beautiful and lively space. At noon, each class prepares its own meal, the younger class chooses a light meal with meatloaf, fruit and soft drinks. Other classes enjoy grilled meat or instant noodles. In the afternoon, we participated in group games such as tug of war, blindfolded goat catching, which was truly a very fun experience. At 6 p.m., everyone got on the bus to return to school, ending the meaningful camping session. On the way home and even when going to sleep, my mind still remembered the camping trip, the wonderful emotions never faded.    

6(x+1)-7(2-x)=26

=>6x+6-14+7x=26

=>13x-8=26

=>13x=34

=>\(x=\dfrac{34}{13}\)

15 tháng 5 2024

Giúp mình với các bạn, mình đăng cần á.