Calli câu: Tất cả là tại Mikey Yêu cầu: có tâm

“Tikal was depicted on Stela 23, which was broken and later re-erected incomplete. It is presumed that Stela 6 and Stela 12 also mention Tikal, but she is referred to by a different name” là gì? (Ko tra bằng Google Dịch và không tra bất cứ nào liên quan đến Google Dịch nha)

giải PT ạ giúp với!!!!!!!!!!!!!!!1

Cho tam giác ABC cân tại A có đường cao AH và phân giác BD. Biết rang AH = 1/2 BD. Hãy tính số đo góc A của tam giác ABC

Cho mình hỏi tại sao nghiệm lại ra là kπ/2 mà không phải là kπ hoặc là π/2 + kπ vậy ạ

NGÀY THI đag CẬN KỀ r mn ơi ( lo sợ , áp lực , đau khổ vì quá nhiều kiến thức cũ cần HỌC THUỘC ) Vẽ : ANIME ( lo lắng , bất an ) ĐẬU MẦM ( đeo băng đô , mệt mỏi ) CHIBI ( chúc thi tốt ) CỎ 4 LÁ may mắn XẤU = BVP đấy nhé nl : ai cx đag chuẩn bị cho ngày thi giống mik ko nè ?

Do you feel like your teenager is spending most of the day glued to a phone screen? You're not too far off. A new survey from the Pew Research Center reveals the surprising ways that technology intersects with teen friendships — and the results show that 57 percent of teens have made at least one new friend online. Even more surprisingly, only 20 percent of those digital friends ever meet in person. While teens do connect with their friends face-to-face outside of school, they spend 55 percent of their day texting with friends, and only 25 percent of teens are spending actual time with their friends on a daily basis (outside of school hallways). These new forms of communication are key in maintaining friendships day-to-day — 27 percent of teens instant message their friends every day, 23 percent connect through social media every day, and 7 percent even video chat daily. Text messaging remains the main form of communication — almost half of survey respondents say it's their chosen method of communication with their closest friend. While girls are more likely to text with their close friends, boys are meeting new friends (and maintaining friendships) in the gaming world-89 percent play with friends they know, and 54 percent play with online-only friends. Whether they're close with their teammates or not, online garners say that playing makes them feel "more connected" to friends they know, or garners they've never met. When making new friends, social media has also become a major part of the teenage identity62 percent of teens are quick to share their social media usernames when connecting with a new friend (although 80 percent still consider their phone number the best method of contact). Despite the negative consequences-21 percent of teenage users feel worse about their lives because of posts they see on social media — teens also have found support and connection through various platforms. In fact, 68 percent of teens received support during a challenging time in their lives via social media platforms. Just as technology has become a gateway for new friendships, or a channel to stay connected with current friends, it can also make a friendship breakup more public. The study reveals that girls are more likely to block or unfriend former allies, and 68 percent of all teenage users report experiencing "drama among their friends on social media." Question 1: What is the main idea of the passage? A. Social media affects friendship too much. 2 B. Teenagers are making and keeping friends in a surprisingway. C. The difference of making new friends between girls and boys. D. Social media connects friendship. Question 2: The word "digital" in the first paragraph is closest in meaning to . A. analogue B. numeracy C. numerous D. online Question 3: According to the passage, what percentage of teens spend actual time with their friends? A. 25% B.55% C.27% D. 23% Question 4: The following sentences aretrue, EXCEPT . A. According to the survey, more than half of teens have ever made new friends online. B. Teens only meet face-to-face one fifth of online friends they have made. C. Most teenagers use video chat to maintain relationship with friends. D. New forms of communication play an important role in keeping friendships. Question 5: The word "they" in paragraph 3 refers to . A.friends B. online garners C. their teammates D. online-only friends Question 6: What can be inferred from the passage? A. Boys are more likely to meet new friends than girls. B. Most teens are not easy to give others their usernames when making new friends. C. The majority of teenage users agree that social media has negative consequences in their lives. D. Thanks to social media, more than two thirds of teens are supported when they face with challenges in their lives. Question 7: What is the synonym of the word "breakup" in the last paragraph? A. termination B. divorce C. commencing D. popularity Question 8: What does the writer mean when saying "68 percent of all teenage users report experiencing "drama among their friends on social media""? A. Most teenagers take part in drama on social media. B. Most friends on social media of teens are reported in drama. C. Most teenagers use their experience in drama with their friends on social media. D. Most teenagers have ever had conflicts with friends on social media. giúp với ạ

Cho a+ b+c=0. Cmr a³+b³+a²c+b²c-abc=0

Tìm x thuộc N c , x chia hết cho 6 dư 4 ; x chia hết cho 9 dư 7 ; x chia hết cho 10 dư 8 và x < 500 d , 29 chia hết cho x dư 2 ; 79 chia hết cho x dư 4 ; 130 chia hết cho x dư 5 Giúp mk với , chiều mk phải nộp r !!!

ở cà chua,gen A quy định quả đỏ,gen a quy định quả vàng; Gen B quy định quả dạng tròn,gen b quy định quả dạng hình bầu dục.Khi cho giống cà chua quả đỏ ,dàng tròn lai với giống cà chua quả đỏ,dạng bầu dục đc F1 có tỉ lệ 50% cây quả đỏ : 50% cây quả đỏ,dạng bầu dục.Xác định kiểu gen của các cây bố mẹ?Biết các gen phân li độc lập với nhau,một trong 2 cây bố mẹ thuần chủng MONG MỌI NGƯỜI GIÚP EM Ạ!!