解き方教えてください(´；ω；｀)

10% A. Find the indicated sum of each geometric series Mras ane se 1. a,= 1, a= 1 1024 2. a, = -1, a,o= 512, r=-2; S,10 A 3. x+ 2x? + 4x + 4. xy + xy° + xy° +.. S. B. Find the specified value using the given information about the gaomem 1.r=2 S。=2044 ; a, 2. r=3 S,= 121; 0。 3. r=, S,=31, 0,= 16; n

英検のライティングで理由のところだけ添削おねがいします🤲

TOPIC Some people say that too much water is wasted in Japan. Do you agree with this opinion? POINTS OSS 26Tusller ● Daily habits ● Technology ● The environment and othe

この問題の2番 このやり方じゃないと出来ないのでこのやり方で 途中式教えていただける方いませんか🙇🏼‍♀️ お願いします。

基本例題 4 展開式の係数 (1) 仁定理の利用) 次の式の展開式における, [ ]内に指定されたものを求めよ。 (1)(2x°+3)6 [x° の項の係数] (2) (x+2)[xの項の係数] x 1章 か.8 基本事項 4 1 HART OLUTION 二項定理 (a+b)"の展開式の一般項はC,a"-"b" 指定された項だけを取り出して考える。 (1) 展開式の一般項は C,(2x°)6-r.3"=,C,-2°-r.3"x'2-2r x2-2r=x となるrを求める。 (2) 展開式の一般項は .Crx*(2)=.C-2"x".- -4-ア x =x° となるrを求める。…… 解答 (1)(2x2+3)° の展開式の一般項は 6C; (2x)r.3"=。C,·2°-r.3"x!2-2r円 x°の項はr=3 のときであるから,その係数は 6C。-2°-3°=20×8×27=4320 *px°の形に変形 *12-2r=6 から r=3 2 4 (2)(x+-)の展開式の一般項は やb.960から x" x 1 -4-r. AC,x ) =.C,2"x*-r. x x" =x*-2r 1 の x*-=x* から x-"=x'x" これから4-2r=2 とし てもよい。 *4-r=2+r から r=1 よって r=1 ゆえに, x°の項の係数は 4C-2'=4×2=8 INFORMATION (a+b)" の展開式は(a+b)(a+b)(a+b)…(a+b) の①~①から,それぞれa, b 3 のどちらかを取り,それらを掛け合わせたものの和である。よって, a"-"b" の項の係 数はn個の(a+6) から6を取り出すr個を選ぶ場合の数,すなわち» Cr である。 「」を取り出す個数に注目してもC,=»Cn-r から同じ結果になる。 n 3次式の展開と因数分解,二項定理

なぜ角dになるのかが分かりません 角TASです！

No. 362 OOO00 C 基本例題 図のように,大きい円に小さい円が点Tで接してい る。点Sで小さい円に接する接線と大きい円との 交点を A, Bとするとき, ZATS と ZBTSが等し いことを証明せよ。 ATAB の辺 直線 PT は 【神戸女学院大) CHART 接弦定 3点A, 弦である 定理の S B p.357 基本事項2 CHARTO 接線と弦には 接弦定理 OLUTION BT と小さい円との交点)を引くことによって, 接弦定理 を利用できる。 解答 APAT とA] PT°=PA·PE P 解答 点Tにおける接線を引き,図のように 点C, Dを定める。 また,線分 AT, BTと小さい円との 交点をそれぞれ P, Qとし,点Sと2 点P, Qを結ぶ。 ZASP=a, ZBSQ=6, ZCTP=c, ZDTQ=d とおく。 直線 AB は小さい円の接線であるから C D また よって P C ゆえに くd A したがって、 直線 PT は S a b B する。 ZATS=a, BTS=6 a+btc+d=180° *接弦定理 よって -3点C, T, Dは一直線 上にある。 直線 CD は小さい円, 大きい円の接線であるから ZTSP=c, ZTAS=d INFOR 全直線CDは2つの円の よって,ATASの内角の和を考えて この例是 共通接線。 ZT+ZA+ZS==a+d+(a+c) =2a+c+d=180° すなわ 0, ②から a=b 定理 ゆえに ZATS=ZBTS (日+1 8- PRACTICE… 82° 右の図のように,円0に内接する△ABC とAにおける接線 息がある。ただし, AC<BC とする。 辺 BC上に AD=BD となるように点Dをとり, 線分 AD の延長と円Oの交点をE, 線分 ECの延長と!の交点をFとする。 このとき, △ABC B と△AEF が相似であることを証明せよ。 PRAI C が 日 るJ 6.5.4 |20 (通り) (え21) かタ

英語の長文ってどうやったら読めるようになりますか

1 次の英文を読んで、問 (1) ~ (5) に且本語で答えなさい。 Lobola is the African custom of paying fora bride. Although it is an old custom, not In fact, it is being debated in Botswana. everyone in African cultures is happy with it. Many people, including many women, support payment of lobola. They explain that in Tswana culture, a marriage means joining a family, not just marrying an individual. The idea of marrying into a family is very African. just the man.Through marriage, the young woman's family loses their daughter as she then becomes a part of her husband's family. Lobola is a way to show thanks. It is a form of generosity in African culture. In its traditional form, they also explain, the groom's family gave cattle to the bride's family. But it didn't matter whether the family owned cattle or not. A woman does not get married to A man only had to pay what he could afford if he had no cattle, he could give something else, even the smallest form of payment. The tradition of lobola was a matter of pride. Today, lobola is often given in cash. purchase of a bride. Lobola is meant to join two families together. They know that But its supporters say it is not about the some people abuse the custom. But they believe that the tradition should not be tossed out because it has many positive effects. Rather than get rid of it, many believe it should just be explained better. However, many others say this custom should be stopped. They think it has become commercialized. Families make lots of demands on the groom. They think this makes lobola look very bad. They argue that in Africa's past, a girl was an asset at home. and other household chores. She did the cooking When a family lost that child through marriage, it demanded payment. Today, they think that lobola has changed into a useless tradition. In this custom, a man is buying the right to control a woman. They say women are individuals with rights. In today's world, parents do not have to be paid for a bride because their male and female children are equal. They all work and make contributions to the household. They believe that paying lobola makes it seem like a man is buying a pair of shoes or a bicycle, instead of getting married. They also argue that it is often a financial burden for couples. It is too difficult for many people to pay the price asked. So, is lobola a rich tradition, bringing families together? Or is it an ugly custom of buying women? This debate continues in Botswana, as does the custom.

全くわからないです。 教えてくれると嬉しいです。 お願いします🙇‍♀️🙇‍♀️🙇‍♀️

15人に招待状を送るため, あて名を書いた招待状と,それを入れるあて名を 民原 80O000 重要例題19/完全順列 書いた封筒を作成した。 招待状を全部間違った封筒に入れる方法は何通りま 代され人 A [武庫川女子大] るか。 基本。

英語表現です。 分かる方、教えてくれると嬉しいです🙏🏼

LESSON 2 さまざまな「時」を表現する 教科書 pp.20-21 PART 3 have done/have been doing D A Change the verbs into the correct form (have [has] done). my key. I can't go into my house.( lose ) a perfect score on a math test twice.(get ) (2) Takuya (3) Lucy a fan of the soccer team since she was a child.(be ) (4) The train the station.( just leave ) (5) I the song in English.(never sing ) (6) Keiko and I each other for a long time. ( know )

もう全部間違ってると思います💦 教えてください🙏

E Ryota stayed in a farm in Hokkaido last summer. He took some pictures there. Look at two of them and complete the dialog. Use the words below in the correct form. look / rain / see / take care of / think Ryota: What do you think I'm doing in this picture? Anne:I guess you (are of a cow, but it (2) Scary to me. Ryota: Not at all. I love animals. Anne: You also rode a horse. How was it? Ryota: It was fun though it rain hnk Anne:I you had a great time. Ryota: Yes. Actually, I ee the farmer I worked with tomorrow here in Tokyo.

意味がよく分からないです。 教えて欲しいです🙇‍♀️！！！

(2)) a, bを, aくbを満たす自然数とするとき, a+b=p, ab=qを満たす p.388 基本事項 素数p, qを求めよ。 コADM AT T

【至急】 この問題が解けません わかる方いますか 問題式も書いてもらうと助かります🙇‍♀️

Name Period Pythagorean Theorem Pythagorean Theorem-IF a triangle is a right triangle, THEN the square of the length of the hypotenuse is equal to the sum of the squares of the lengths of the legs. That is, in the right triangle shown in the figure to the left, a* + b°=c. Prove the Pythagorean theorem. Hint: Find the area of the large square above using sides a, b, and c (as labeled) two diferent ways. For a triangle, A =- bh and for a square, A = s'. Remember that the area of the large square will not change from one calculation to the next Proof: