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数学 中学生

中学1年生 規則性の問題についてです。写真にある(3)の問題が分かりません。解説で(m−1)が出てきますが、どこから分かるのでしょうか…。教えてください。よろしくお願いします。

(3) このテーマのカギ 途中式や考え方などは消さずに、残しておく 書くコツ 計算ルールや、公式に従って正しく書くようにする 次の図のように、1行に6マスある表に、次の【規則】にしたがって、自然数を順に1つずつ 書き入れていく。 このとき、次の問いに答えなさい。 ('17 三重県 ) 【規則】 . 1行目のマスには左から右へ 1から6までの自然数を順に書き入れる。 2行目のマスには左から右へ 7から12までの自然数を順に書き入れる。 3行目のマスには左から右へ 13から18までの自然数を順に書き入れる。 ・以下同様にして、4行目以降の各行のマスに自然数を順に書き入れていく。 (1) 7行目 5列目のマスに書き入れら 1列目 2列目3列目 4列目 5列目 6列目 れる数を求めなさい。 1行目 1 2 3 4 5 6 2行目 7 8 9 10 11 12 3行目 13 33 14 15 16 17 18 20 ... 20 21 22 23 24 4行目 19 (2) 100 は何行目何列目のマスに書き 入れられるか 求めなさい。 行目列目のマスに書き入れられる数と, (m+1) 行目n列目のマスに書き入れられる 数の和が716 であった。 このとき,m,nの値を求めなさい。

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英語 中学生

これの答えがないためだれか答えを教えてください‼️‼️よろしくお願いします🙇🏻‍♀️‪💧

[B] The Threat of Tourism As air travel gets cheaper, more and more people are visiting famous sites around the world. Although this increase in tourism brings economic benefits to the areas around these sites, tourists also cause unexpected problems. In particular, some famous works of art are being affected. This is because people's breath increases carbon dioxide and humidity levels. Gradually, these levels damage, old paintings and other works of art. One famous site facing this problem is the Sistine Chapel in the Vatican in Rome. The 500-year-old paintings, especially the famous ceiling by Michelangelo, are so popular that as many as 2,000 people may be viewing them at a time. In 1994, after noticing that the visitors' breath was damaging the paintings, the Vatican purchased an expensive air-conditioning system to protect them. However, the crowds continued to increase, so in 2014, the Vatican decided to limit the number of visitors to about 6 million a year. Another site that faces a similar problem is the Mogao Caves in Dunhuang, China. These caves are full of beautiful Buddhist paintings and sculptures that attract thousands of visitors every year. Many of the artworks are very old and, as with the Sistine Chapel, the carbon dioxide in the breath of visitors is gradually damaging them. Originally, 40 of the 400 caves were open to visitors, but this number was reduced by half in 2014. In addition, the number of visitors allowed into the caves has been greatly reduced. A different solution is being tried in the Ajanta Caves in Maharashtra, India. The caves also have many ancient Buddhist paintings in them, and these too are being damaged. In order to protect the paintings, visitors are quickly rushed through the caves. However, many visitors complained about the short time, saying they could not look at the paintings properly, so the local government built a visitors' center with exact copies of the caves. Visitors are allowed to study these copies for as long as they like. The local government hopes this will provide a good balance between protecting the paintings and giving tourists a good experience. (30) As the number of tourists increases, 1 unexpected economic problems occur among people living around famous sites. 2 the carbon dioxide and humidity in their breath harm the things they go to see. 3 air pollution caused by the carbon dioxide from airplanes increases. 4 people have trouble breathing because of the high levels of humidity. (31) In 1994, the Vatican 1 allowed only 2,000 tourists to look at its paintings by Michelangelo. 2 invited 6 million visitors to see its 500-year-old wall paintings on one day. 3 installed an air-conditioning system in order to make visitors more comfortable. 4 tried to reduce damage to its paintings by buying an air- conditioning system. (32) What is one thing that has been done to protect the Buddhist artworks in Dunhuang? 1 More of the Mogao Caves have been closed to visitors. 2016年度第2回 新試験 2 Visitors are being asked to avoid breathing too close to the paintings. 3 Some of the visitors are being taught new ways to preserve paintings. 4 The number of visitors has been reduced from 400 to 40 a day. (33) Why were some visitors to the Ajanta Caves unhappy? 1 The majority of the paintings have turned out to be copies. 2 There were not as many Buddhist paintings as they had expected to see. 3 They did not have enough time to look at the paintings inside the caves. 4 The long lines at the visitors' center have prevented them from seeing the paintings. 29

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