数学について質問です。 例題66の(2)で自分の記述とFGの解答をみると、自分の記述の方が簡単に書いてあるんですけど、このくらいでも減点されないのでしょうか？ 回答よろしくお願いします。

Think 例題 66 文字係数の2次不等式 aを定数とするとき, 次の2次不等式を解け. (1) x²-(a+4)x+4a<0 解答 050 考え方 (1) 2次不等式を解くには, グラフとx軸の共有点が重要である. 2次関数のグラフ をかいたときのx軸との共有点のx座標の大小で場合分けをする。 第2章 ax2-3ax+2a=a(x-1)(x-2) となるので,a> 0, a<0で場合分けをする. (2) (1) x2-(α+4)x+4a<0より、 左辺を因数分解する. y=x2-(a+4)x+4a① フとx軸との共有点のx座標は, (i) a >4 のとき Focus ①のグラフは,右の図より 求める解は, 4<x<a a=4のとき ①のグラフは, 右の図より, 求める解はない (i) α <4 のとき (i)~(血)より, ①のグラフは, 右下の図より, 求める解は, a<x<4 a>4 のとき,4<x<a α=4 のとき, 解はない (2) ax²-3ax+2a>0 (a=0) a < 4 のとき, a <x<4 (x-a)(x-4)<0 とすると,①のグラ x=a, 4 3 2次方程式と2次不等式 139 ①の解は, x<1,2<x α<0 のときa=d7 ②のグラフは上に凸より, 1<x<2 4 ②のグラフは下に凸より, (i) a=4 = x (2) ax²-3ax+2a>0 ONS a(x2-3x+2)>0 より, a(x-1)(x-2)>0① a a4x y=ax²-3ax+2α ・・・・・・ ② とすると、②のグラフ とx軸との共有点のx座標は, x=1,2 (i)a>0 のとき付き xC 350 (ii) V₁=Y 1 ①の解は, (i),(ii)より, a>0 のとき、x<1,2<x a<0のとき、1<x<2 BOX 文字係数の2次不等式は場合分けに注意 ·····ose x **** 共有点のx座標の大 小で場合分けする. (i) αが4より大きい (右側) (ii) a と 4が等しい () αが4より小さい (左側) 左辺を因数分解する. Wars SOVICKE 2次不等式という条 件からa=0 となる ORVOSI Scēcosxs ので、とくに示され ていなくても注意す る。 αの符号によって, 上に凸か下に凸かが 変わるので注意する. ①

(24)の答えがなぜ1になるか分からないです…

(24) The Tale of Mejk Swenekafew Recently, many people have been talking about "fake news" news reports that are untrue. However, such reports have been around for a long time. They are sometimes used in order to get more people to read newspapers, watch TV programs, or visit online news sites. People also use fake news to spread their political or religious beliefs. However, ( 24 ) publishing fake news. In 1903 in the city of Clarksburg, West Virginia, fake news was used to check/if newspaper was really writing its own articles. In the city, there were two rival newspapers, the Clarksburg Daily Telegram and the Clarksburg Daily News. The Daily Telegram's staff believed that the Daily News's reporters were ( 25 ). The Daily Telegram decided to check whether this was happening. It published a fake news story about a man who had been shot after an argument about a dog. The man's name was Mejk Swenekafew. Soon afterward, exactly the same news appeared in the Daily News. However, the reporters at the Daily News had not noticed that the name "Swenekafew" was actually "we fake news" written backward. They were forced to admit that they had copied the Daily Telegram's article. These days, there is more pressure than ever on newspapers, news programs, and news websites to get more readers, viewers, and visitors. In order to do so, they need to report big news stories as quickly as possible. ( 26 ), they are constantly watching each other to make sure they have the latest stories. However, they need to be careful not to do the same thing that the Clarksburg Daily News did. these are not the only reasons for many popular websites have been there are rules to stop people from some TV companies began by a

(21)の答えが3になるのがなんでか少し分からないです…わかる方いますか？？

(21) (22) (23) Any Change? Long ago, humans did not use money. Because they often could not produce everything that they needed, they traded some of their goods for goods made by others. Gradually, the goods that they exchanged were replaced by cash. For hundreds of years, metal coins and paper bills that can be exchanged for goods and services have been produced. Cash is convenient for many people because it is easy to carry. At the same time, though, it ( 21 ). Another disadvantage is that criminals have been able to produce fake coins and bills. In the middle of the 20th century, plastic credit cards were introduced. They had security features to prevent them from being used by anyone except their owners. At first, their use was limited to wealthy people. Over time, however, they became ( 22 ). In the last few years, apps for smartphones that can be used in the same way as credit cards have also become popular. Because of this, some people are suggesting that we may soon see the end of cash. Supporters of a "cashless" society in which all payments are made electronically argue that it would have several benefits. For example, people would not have to worry about keeping their wallets safe. However, some people are concerned that they might be unable to pay for the things they need because of a software error or a broken smartphone. Moreover, some people do not have bank accounts or credit cards, so their only option is to use coins and bills. ( 23 ), it seems as though societies will continue to use cash. 1 can be lost or stolen can be recycled 1 thinner and lighter 3 harder to use 1 For now 2 Until then 2 4 2 4 3 is used for shopping online is understood by almost everyone more colorful and exciting more widely available With luck 4 By contrast

中3です理科です 移住計画を授業で立てていて金星にしたのですが硫酸しかないということで硫酸を水にする方法はありますか？？

不定詞についてどなたか教えてください。 点線部分の前にtoがあり、不定詞の問題だと思い点線部にAが当てはまると思ったのですがこの問題は不定詞にはならないそうです。何故でしょうか。

2. As Ms. Smith has already received a permit from the city, she looks forward to -- construction of her driveway soon. (A) begin (B) began (C) begins (D) beginning

3番がなぜtryになるか教えて欲しいです

) news to countries importing energy resou 2. There are many problems to be discussed / discussing) when it c warming. 研究所 3. The institute had a chance to ((try)/ be tried) a new technology. 4. We read a book (with/on) water pollution.

教えてください🙏

5. First, we'll have dinner. (A) Still 6. The 7. (A) debt (B) Though of the party is over there. Let's say hello to him. (B) host (C) resort (D) job we'll take a walk along the river. (C) Even have to exercise a lot and watch what they eat. (B) Athletes (A) Benefits 8. Tokyo and Osaka have great and buses. (A) transportation (B) stadium (D) Afterwards (C) Improvements (D) Concerts systems. Both cities have many trains (D) building (C) competition

Part2の下線部がわかりません。 書いたところは合っていますか？また空欄は何がはいりますか？お願いします

Part 1 Find the words in the box in the word search. bags blanket concierge front desk laundry mattress occupied reservation room service towel WRESERVA DAR The and lumpy. H mattress W D B F G D 1. I asked the housekeeper to wash my Towel R P L B K for us. We ordered dinner in our room from U H O A TL R D S T U E M WO A F R S - Y G V S F G K C G on the bed was hard A P TI F . She paid her hotel bill at the front desk. - The made dinner reservations E D F VO Y S O U 1 DR W I B FL C E C N B Q LO R I J O T N R A D N K M G O O R Q R UI D AN D Part 2 Use the words and phrases in Part 1 to complete the sentences below. T L R O W E L T Y 1 W U M E B A D B L F N K E P T O S W G V O R O O M S E R V 1 C G R E 1 C 7. I requested a warmer. the bed. N O C K E E B 6. Our room was still occupied previous guests. blanket bags by the for to 8. The bellhop carried our the room. 9. He made a for two nights. 10. I went downstairs to get more soap and a fresh

写真の5の文についてですが、青線部のrecognizingの主語は何ですか？(自分的には、認めるという動作は人が行うものだから、一般の人々などが省略されているのかなと思います)解説おねがいします。 補足:5の文は4の文(前文と大いに繋がりがあるように感じたので、参考として含... 続きを読む

④4 These days, there is (in fact) a growing recognition [of the need to V S develop a greater linguistic awareness and tolerance of change, especially (in a multi-ethnic society)]]. 和訳 今日実際に、特に多民族社会で、 言語への意識を高め、言語の変化をより受 け入れられるようにする必要性がますます認識されるようになってきている。 語句 tolerance 「容認 寛容さ」、 multi-ethnic 「他民族の」 5 This requires, (among other things), < that schools have the knowledge S V 0 and resources [to teach a common standard], while recognizing the existence and value of linguistic diversity)>. 和訳 そのためにはまず、 学校は共通の基準を教えるための知識と能力を備える一方 で、 言語の多様性の存在と価値を認める。

文構造について質問です！ catch a picture で「姿をとらえる」ですか？？ これってどういうイメージで覚えればいいんでしょうか？？

第6段落 ¹Awareness of touch can bring a new feeling to the most commonplace experiences. 2“I have just touched my dog," wrote the young Helen Keller in her diary. 3"He was rolling on the grass with pleasure in every muscle and limb. 4I wanted to catch a picture of him in my fingers, and I touched him lightly as I would cobwebs. 5But, to my surprise, his body turned towards me and moved into a sitting position, and his tongue gave my hand a lick. He pressed close to me as if he intended to put himself into my hand. He loved it with his tail, with his paw, with his tongue. If he could speak I believe he would say with me that paradise is attained by touch."