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英語 高校生

( )に入る番号を選んで英文をすべて日本語にやくしてほしいです!!至急おねがいします🙇

) we conducted last month. The good ロ(6) We received the results of the ( news is that most customers are extremely happy with their no products. However, they are not as pleased with the help they get when they call the customer service hotline. 1.outlook 2.opinion 3. client 4. survey ロ(7) Polly is retiring after working in the manufacturing department for fifteen years. The other ( buy her a nice gift and take her out to dinner. )in the department are collecting money to 1. instruments 2. equipment 3. employees 4. occupation ) the best service possible for our customers. All ロ (8) We want to ( employees need to smile and answer questions, even if that is not part of their regular job description. 1. receive 2. confront 3. regard 4. provide ロ(9) The human resources department gave the employees a survey to fill out. The company wants to collect honest ( ) about the new overtime policy, so the employees' names are not written on the form. 1. feedback 2. balance 3. remainder 4. security ロ(10) A: The section on your resume that describes your education is ( Did you graduate from college? B: Yes, I did. However, it took me six years because I had to work at the same time as I attended school. 1. precise 2. forgetful 3. accurate 4. vague コ (11) A: I saw you shopping at Big Market last night but didn't say hello. Do you go there often? B: Yes, I ( ) stop there on my way home from work. 1. never 2. frequently 3. forever 4. rarely ] (12) I usually drink coffee in a café in the morning, but recently it has got more expensive. I thought I would try making some at home ( ) going out. 1. better than 2. as for 3. instead of 4. close to

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数学 高校生

線を引いているところで、なぜその式を使うのか疑問です。教えてください🙇‍♀️

Check |x-mx+ pm-9 例題 113 2直線の交点の軌跡2 (お(熊本大) m の2本の接線が直交するような点Pの軌跡を求めよ。 これは y=の接続なので,2式からyを消去した2次方程式の判別なる る。mの2次方程式を導き出したら解と係数の関係を利用する。 点Pの座標を(b, q) とおく. D=V と 解答 x-mx- pm+qよい ので、ポーnx+ pm-q=0の判別式を D.とすると, D=0 となる。 よって, のの解mが接線の傾きとなるので,①は異なる2つのor 実数解m,ma をもち,かつ,m;m2=-1 の関係にある。 異なる2つの実数解 m,, m2 をもつための条件は,①の 判別式を Da とすると,D:>0 である。 D2 1 のつおに D,=m'-4pm+4q=0 垂直条件:mm'=ー) 又 mm くが-q>0 より, ゲ=(2カ)?-4q>0 より, がーg>0 のまた,①において, 解と係数の関係より, mm2=-1 であるから, 上円 09くがを満たす範 m,m2=4q 94 4q=-1 0円販O o 0 半 。 異お3丁点コ 1 したがって, =ー …3 4 2, 3より, が+>0, q=- phtゴt -=b 4 おう0090ー が+ー>0はすべての実数かに ー同お 0 ついて成り立つ. よって,点Pの軌跡は,-M0\ の2つの解をa, Bと 画直線 vーー 解と係数の関係 |ax+ bx+c=0 (a+0 すると, 0」 b α+B=-- a8=! a x 同係で点Qを点Rに対応 が内に変換されるな 1 4

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