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Mathematics Senior High

aが当たる確率は のところってaが当たってbがはずれる確率のことですか? 黄色チャートです。

20本のくじの中後,当たりくじが5本ある。このくじをa, b2人がこの順 0 基本例題36/確率の加法定理(順列) サ合跡 COO0。 82 DO00 20本のくじの中に, 当たりくじが5本ある。このくじをa, b2人がこのに に,1本ずつ1回だけ引くとき, a, bそれぞれの当たる確率を求めよ。大 し,引いたくじはもとに戻さないものとする。 |p.284 基本事項8 CHART S 率部で出娘 88 lOLUTION 確率 P(AUB)A, Bが排反なら P(A)+P(B) … bが当たる場合は, 次の2つの事象に分かれる。 A:aが当たり, bも当たる B:aがはずれ, bは当たる TAAHO よって, 事象 A, Bの関係(ANB=D かどうか)に注目する。 なお,確率の乗法定理 (p.310 参照)を利用してもよい。 解答 aが当たる確率は 5_1 sP1 20P, で 20 4 次に, a, b 2人がこの順にくじを1本ずつ引くとき,起こりう| () るすべての場合の数は このうち, bが当たる場合の数は A:aが当たり, bも当たる場合 B:aがはずれ, bが当たる場合15×5=75 (通り)出( A, Bは互いに排反であるから, 確率の加法定理により, 当東 ま会正復支日 20P2=380(通り) 12本のくじを取り出して、 a, bの前に並べる場合 がー sP2=20(通り) の数。 正白①中の bが当たる確率は の中で動が 20 75 380 95 P(AUB)=P(A)+P(B)= 380 1 380 4で出 事象 A, Bは同時に起 (ト+)(@+1) こらない。 INFORMATION 当たりくじを引く確率は同じ 上の例題において, 1本目が当たる確率と 2本目が当たる確率はともに- 前出 で等しい。 一般に,当たりくじを引く確率は, 引く順番に関係なく一定である。 また,引いたくじをもとに戻すものとすると, 1本目が当たる確率と 2本目が当たる 確率はともに一である。したがって

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English Junior High

⑹が分かりません! ちなみに答えはエです

3次の文章を読んで, あとの (1 ) ~ (6) までの問いに答えなさい。 Today we travel the world easily. Cars, trains, and planes ( A )us quickly from city to city. Thousands of years ago, oit was different. There was only one way to travel from Europe to Asia. It was called the Silk Road. In fact, the Silk Road was made up of many roads. They(through, like、 passed. places, different, many) deserts, rivers, mountains, and forests. The Silk Road dates from about 100 BC. Traveling along the Silk Road was very hard. The best way to travel along the Silk Road was by camel. Many people used horses, too. Others, the less fortunate travelers, had to walkn Most people traveling on the Silk Road were bringing things to sell. They Silk is a carried many different things, but the most famous was silk. material that is soft and used for making clothes. 9ds v The Silk Road was also important for carrying ideas. Philosophies like Buddhism and mathematics were carried from country to country. This was the easiest part because ideas are easy to carry! ®Anyone can do it! At the Many people started their journey along the Silk Road in China. eastern end of the Silk Road was Xian. This was the capital of China at the Xian had all the comforts of a big city. There was time. 4) food to eat and water to drink. It was a good place for travelers to prepare for the next part of their journey、 く注> philosophies 哲学 Buddhism 仏教 - mathematics 数学 Xian 西安 comforts 快適さ om em deT (1) ( A ) にあてはまる最も適当な語を,次のア~エから1つ選び, 記号で 答えなさい。 ア put イ drive ウ fly エ take uo on a'tel (2) 下線部①の内容として最も適当なものを, 次のア~エから1つ選び, 記号 で答えなさい。 ア人々の生活 イ 人々の移動方法 ウ 国際情勢 エ 国の治安 (3) 下線部②が本文の内容に合うように, ( かえなさい。 )内の語を正しい順序に並べ

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English Senior High

(24)がなぜ3になるのか わかる方いらっしゃったら解説お願いしますm(_ _)m

Cows Need Friends Milk production is big business. In North America, for example, one person consumes on average over 150 kilograms of milk every year. To supply the huge amount needed, big farms use machines that automatically feed cows and take their milk. Because ( 24 ), the cost of producing milk is lower. On such farms, though, it is easy for diseases to spread from one animal to another. This can lead to many cows dying on one farm. As a result, cows are often kept separately from a young age. Scientists in Canada researched the effects of keeping young cows in this way. They compared such cows with ones that had been kept with another cow. The researchers showed a red plastic container, which the cows had never seen before, several times to each cow. The cows that had been kept in pairs were interested in the container_at first but soon ignored it. ( 25 )。 the cows that had been kept alone continued to react as if it was the first time they had seen the Container. The researchers concluded that cows kept alone are more sensitive to new things. This is important news for farmers. If cows cannot get used to the feeding and milking machines, milk production slows down. The researchers believe farmers would have fewer problems with feeding and milking if cows were kept in very small groups, rather than separately. The researchers also say that diseases are not sucha big problem for small groups. There should be little risk of ( 26 ) if only two or three of them are kept together. (24) 1 each cow is much larger 2 the milk can be kept longer 4 cheaper food is being used proie 3 fewer people are needed (25) 1 Later on 2 At last 3 In other words 4 On the other hand (26) 1 feeding cows too much 3 wild animals attacking 2 losing many animals 4 young cowS staying healthy

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English Junior High

画像の問題で、答えがアなんですけど なぜアになるのか教えてください(>_<;) 私はバードウォッチングのツアーからスキージャンプのトーナメントまで22日から25日で見れると思いイを選択しました。

の対半中 Girtes:dsT) い 中 文英 次の英文は,ある町のイベント情報 (Information)です。これを読んで,問いに答えなさい。 ★Event Information for the 4th Week of December | Event Names( Places ) *Notes 6 dub Date Time Winter Bird Watching Tour 22nd (Lake Nishino ) 7:00-8:30 with *professional guides! b ~28th 00T *Ice Hockey *Tournament (Sanshiro Stadium) Ski Jumping Tournament (Mt. Kita Jump Stadium) I0 00 24th。 STTG MLGO 15:00-17:00 many famous players! abest 25th 13:00-16:00 international tournament! ★ You can take *free buses between the station and each place. (It takes 30 minutes. noo ★ 500 yen is needed for the *parking lots if you go to Jsdi ach place by car. nods stt blot ot6) edosat asw i WAdult (16 years old and over ) Child (12-15 years old ) Child ( 0-11 years old ) 1,500 yen 700 yen VT S2 Tickets (Each Event ) 0 yen 10 2cG 20 03u umBe on gs professional プロの simw ice hockey アイスホッケー 19gpg 198 (注) note (s) 備考 parking lot (s)。駐車場 tournament 大会,トーナメント adult 大人blot odel .aM as free 無料の 191A Jnshogmi oals aidT STommib wol に当てはまる最も適当 o2m9 ob os ob-oj. Tetw bas ob 問1 次の(1), (2)の英文について,本文の内容から考えて, , 9d なものを,それぞれア~エから選びなさい。 16dw wonal of boog B 21 21 md 'ISeb veve jail ob-of dpan 0led (1) You can go to all the events if you stay in this town for only | days. h voige T ア two 1,ofseM ot ainsdT" .boaipAs.spon A acp イ three ウ four エ five 1od srtit v lo Jesr" Cay of egraduation)

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English Junior High

答えがないのですが、間違ってるところはありますか? あったらどなたか教えて頂きたいです🙇🏻‍♀️💦 あと空白部分が分からないので教えてください🙇🏻‍♀️

(2点×5) | 知識技能5点×5 点 単語のつづり 日本語に合う英単語を, から選んで書きなさい。 Map 4ulcby chance lect convenient 1 (1) Do you have a (地図 )? (2) We can get the information ( 速く ). (3) IfI have the (機会), Iwant to visit Italy. chance qujckly map (4) You can(選ぶ)the dish you like. The internet is very ( 便利な). Correctly select Con ve hi ent 2 適語選択 (2点×5) 2知識技能5点×5 点 { }から適する語を選んで書きなさい。 (1) {When, If}I were you, I would call him tonight. If Keiko { are, were } here, we would play tennis together. were (3) IfI{ has, had } a ticket, I could go and watch the soccer game. had Could esh If he went there, he { can, could } get the CD. (5) I{ hope, wish } I could win the match. 4) 3 語句の意味 下線部の語句の意味を日本語で書きなさい。 (3点×3) 3 知識·技能5点×3 点 (1) If it were sunny today, I would go out with my friends. (1 もし今日暗れいたら 彼は大きな壁を買うことかきる 私が値だったらなあ (2) If he hada lot of money, he could buy a big house. I wish I were a cat. 4 英文の完成 日本語に合う英文になるように, ( )に適する語を書きなさい。 (3点×4) 4知識·技能 5点×4 点 (1) これからは,より注意してください。 Please be more careful ( (1 ) now( with (2) 私は彼女と握手したいです。 ) hands( shake イake I want to )her. rest (3) 休憩しませんか。 (4) この部屋をきれいに掃除しましょう。 Let's( Why don't we ( ) this room. 語の並べかえ 日本語に合う英文になるように, { 1の語を並べかえなさい。 (1) もし私が彼だったら, 未央を手伝うでしょう。 IfI{ him /, / would / wère / help /I} Mio. (2) もし時間があれば, あなたといっしょに行くのですが。 IfI{time /,/I/ had / go / would } with you. (3) 今日が休日だったらよいのに。 I(holiday / wish / it / a/were} today. 5 (3点×3) 5知識技能 5点×3 点 were him, I would help had Time , I would 90 wish it nere a holiday

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