黄色の線で引いてあるx =5はどうやって出たんですか？？

[4-3x<2x+1≦x+6 (2) 連立不等式 _2√(x-3)^≧x-1 を解け

0≦a≦b≦c≦d≦2を満たす整数の組(a,b,c,d)の個数を求めよ。 という問題がわかりません。 解説見てもわからないので、どなたか詳しく教えてください！

2 (2)0,1,2の3個の数字から重複を許して4個を選び, 小さ い順に a, b, c, d とすると, 条件を満たす組が1つ決まる。 よって, 求める組の個数は 3+4-1C=Ci=15 (個) 別解 A = a, B=6+1,C=c+2, D=d+3 とおくと, 条件≦a≦b≦c≦d≦2 は, 0≦A<B<C <D≦5 と同値 SOI である。通りの1 よって, 0, 1, 2, 345の6個の数字から4個の数字を 選べばよい。 したがって 6C4=6C2=15 (1)

(3)が分かりません！ θがなぜ19π/12になるんですか？

10 21 = + 2 し,偏角0 は 0≦0 <2π とする。 (C) 2 郎の水 -i, z2 =1+i のとき,次の複素数を極形式で表せ。ただ is (S) (1) 21 (1) Z122 (2) (3)2122 Z2 id 思考プロセス 2122=- 2 → (1) 「積を計算 「極形式」 の順で考えると... 「極形式で表す。 → 「積を計算」の順で考えると √3+√3-1 + -i ← 偏角を求めにくい。 2 800) & (E) 公式の利用 (税込) }& = (=) 21=r1 (cosOi+isin Oi) 積2122=r1r2{cos(01+02)+isin (Q1+O2)} 積 ・和 |22=r2(cos02+isin02) 商 11 = Z2 12 商 -{cos(01-02)+isin(01-02)}inA 差 Action» 複素数の積(商)は、絶対値の積(商)と偏角の和 (差)を求めよ 11209 Z1, 22 をそれぞれ極形式 です。 2 解 21 COS 17+isin 7, 2 -π, 22= 3 √2 (cos+isin π より |21|=1,|22|= √2, 2 π arg21 -π, arg22 3 4 22 =√√√2 + (1)|z1z2|=|z1||22|=√2,arg(z122) = argz1 + arg22 + 11 12 2 = π 11 ・π 12 3 11 よって Z1Z2=2 cos 11 π+isin 12 12 21 (2) 21 √2 21 arg Z2 22 2 22 = arg21-argz2 = 52 よって Z1 √2 COS Z2 2 19 よって 2122 N 2 cos 127+ isin 1927) 1920 π +isin 7) (3)||=|21|= 1, argzı = argzı = 12 |2122|=|21|22|=√2, arg (2122) = argz+argz212 12 23 TT π = 4 ・π 12 IS (S) 0200 -x)= 5 つい 5|2 12 π 5 5 209 A 12 2 0 2 -πであるから 3 x i 2 200 偏角0 は 02πで考 えるから 21 22 2の偏角は 5 12 +2= 19-0 π 12

この問題で写真のように解いたのですが、書いてあることを教えてください！

0.30 <log102 < 0.32 である. 1 260 を小数で表したとき, 小数第何位までは0だといえるか. ASOI

there hasn't been rain という表現は可能ですか？教えて頂きたいです。 よろしくお願いいたします。

・「一滴の雨もない」 rigin soinu ni BB X since early spring We haven't had a drop of rain • There has been no rain at all コンマなし until how 完できるので冗長 It hasn't rained at all x It hasn't been raining 「ずっと雨が降り続いていたわけではない」のニュアンス → | x It hasn't been rainy 「雨が多くはない」という意味 × There has been no rainy day 文法的には正しいが, 使われない表現 eyewte ev'l × There has never been ... / We have never had... / It has never rained ...quor ev' 現在完了と共に用いると 「今まで一度も・・・したことがない」 という意味に 文 なる。 よって, 期間表現と共に用いることはNGとなる! see yabot

この選択であっているのかそしてなぜほかの答えではダメなのか教えていただきたいです。

Education Text Completion Select the best answer to complete the text. Then choose the letter (A), (B), (C), or (D). Questions 9-12 refer to the following web page. Part 5 Incomplete Sentences Select the best answer to complete the sentence. Then choose the letter (A), (B), (C), or (D). 1. Before ------- Japan, all international students must get a student visa. (A) enter (B) entering (C) to enter (D) have entered ------- in psychology in university, but now he is an artist. 2. He A majored (A) hers (B) studied (B) she 3. Mr. Toda helped Cathy describe 4. It has been 15 years since I graduated (A) on (B) in 5. Library accounts are automatically created, so no ------- LVU Campus Tours The students of Las Vegas University are at the heart of the LVU experience, 9. tour our campus, meet LVU students, and have them guide you on a campus tour. You can enjoy a candid conversation with 10. students, ask them about classes, housing, Las Vegas, online student support, and more. 11. Doing this will hopefully give you the best idea of what LVU life would be like for you. The two-hour campus tour allows you to experience firsthand everything you need to know. Click here for your guided tour. (C) researched (D) took research plan. (C) her (D) herself ------- university. (C) at (D) from registration is 9. (A) so 10. (A) now (B) then (B) modern (C) initials (D) initialed 12. (C) also (C) latest (D) and (D) current necessary. (A) initially (B) initial 6. I'm happy to have this ------- to study with such great professors. (A) notice (B) benefit (C) factor 7. Statistics is a ------- class for second-year students. (A) require (B) required (C) requiring 8. The geologists plan to study the soil from the mountains Dopportunity (D) requires ------- Canberra. 11. A We will match you with a guide based on your interests and goals. (B) Feel free to ask about other universities found in the area. (C) Take the time to learn more about the city of Las Vegas online. (D) Please let us know the kind of person you were in high school. 12. (A) arrange (B) to arrange Carranging (D) arrangement (A) out (B) next (C) onto (D) around

不適切なものを選ぶ問題です 解答の根拠を教えていただきたいです。 答えは上から順に、1.3.3.1.3.2.2.1.4.4.です。

(1) Judge from the circumstances of the case, the robber must have visited the jewelry shop 1 in advance. 4 11 3 (2) Dreams mostly happen during the state of asleep characterized by rapid eye movement, or REM. 12 2 3 (3) The database contains hundreds of thousands of article, but that does not make it science. 4 T 13 2 3 (4) I fond of my boyfriend, but he often turns up late for a date. Other than that, I have nothing 1 to complain about. 14 2 3 (5) Climate, soil type, and availability of water are the most critical factors than choosing the best type of grass for a lawn. 1 15 2 3 (6) Mary Quant is one of the most popular British designer of the 1960s, whose daisy motif T 2 16 has attracted the attention of younger generations in Japan. 3 (7) After so long a basketball game, I am such exhausted to write my essay, which is due on Monday. 17 2 (8) The music professor strongly advised that Emily goes to the Royal Albert Hall during her stay in London, where a globally known summer concert series is held. 18 1 2 3 (9) In the tea industry, tea leaves are graded in quality according to size, color, and appear. 19 2 3 (10) Some fish use their sense of smell as a guide when return to a spawning river. 1 2 3 20

Dって文意に合わないのですか？？ （合うと思ってしまいました。）

bailgge (a) & mas 77. When making an online flight booking, passengers are requested to specify their meal --- SP (A) preferable 肌 (B) preferred (C) preferably snisegaM of Jaja yigge (D) preferences int tringently

合ってるか教えてください🙇‍♀️

分 ( 10 比較、疑問文、否定ほか ② 次の英文の( )に入る最も適当な語 (旬) を1つずつ選び、番号で答えなさい。 came from his 20 flights were canceled due to the heavy storm. □27 |271 ( 2 As many as 1 As long as ④As soon as STELO AN (大映中 3 As much as y to ten bluoda noy veidos of ( ■272 tignol\on\wodel) considering adding Last year we doubled the number of staff, and we are to sit down togeth 基本 more staff this year. 3 by 4 even 2 very □2 関西学 ☐ 1 plus My grandmother always tells me that the smaller the garden, () to look after 1 the easier it is 273 基本 ③3 it is the easier □274 worla lliw the easier is it notesbianco) Int ④ is it the easier <東海) many companies surveyed in the study sa He is ( ) far the tallest of us all.marketing tool. (大工金) 1 how 2 so too by gas (nedw\eritedt \ Isoiled be) There's not much news in today's paper, ( )? 1275 1 isn't it 3 is there 2 are there ed/whom abroad. 4 aren't there □276 When you finish reading the book, please tell me ( ) you think about it. 1 when 2 what 3 how careles which <女 □277 How come ( ) bring your wife? I did you 2 did you not 4 you didn't □278 3 didn't you ( ) go to the doctor if you are sick? Why not to 3 Should you to LO 2 Why don't you (4) If I were you, (-) A¹ & at A

調査で明らかになる（過去）以前（過去より過去）まで価値を認識していなかったということは、3枚目の図の感じということですよね？？

bne me how soitto to anesob dilw bebuerg a signing elles el AS 19. Dream Toys ------- the value of its Web site until a survey revealed that it was responsible for much of its business.build (A) does not recognize (B) were not recognized (C) had not recognized (D) will not recognize 19fts (A) eonia (8) nerw (3) 91erlw (a)