(2)は間違っていますか。解説お願いします、。

STEP B 153* 平行四辺形ABCD の対角線のなす角を2等分する2直線が A HA 辺AB, BC, CD, DA と交わる点をそれぞれ E,F,G, H とする。 (1) AE: EB=CF : FB を証明せよ。 対角線の交わっている点をNとする。 点と E G D

どうしてＤの値が正と分かるのか教えてください よろしくお願いします

直 -6 128 2次方程式の解と数の大小 (1) 2000000 2次方程式x2-2(a+1)x+3a=0が-1≦x≦3の範囲に異なる2つの実数解を もつような定数aの値の範囲を求めよ。 [ [類 東北大] ・基本 126, 127 重要 130 基本 ・例題 2次方程式f(x)=0の解と数の大小については, y=f(x)のグラフとx軸の共有点の 指針 位置関係を考えることで、基本例題 126,127で学習した方法が使える。 すなわち, f(x)=x2-2(a+1)x+3aとして 解答 2次方程式f(x)=0が-1≦x≦3で異なる2つの実数解をもつ ⇔ 放物線y=f(x)がx軸の-1≦x≦3の部分と異なる2点で交わる したがってD>0, -1< (軸の位置)<3f(-1)≧0f (3) ≧0で解決。 CHART 2次方程式の解と数々の大小 この方程式の判別式をDとし, f(x)=x²-2(a+1)x+3a とする。 y=f(x)のグラフは下に凸の放物線で、その軸は 直線x=a+1である。 SU ELAS 方程式f(x)=0が-1≦x≦3の範囲に異なる2つの実数 指針 解をもつための条件は, y=f(x) のグラフがx軸の -1≦x≦3の部分と, 異なる2点で交わることである。 すなわち,次の [1]~[4] が同時に成り立つことである。 [1] D>0 [21 軸が 13] f(-1)≥0 [4] f(3) ≥0) 34 [1] [1] 21={-(a+1)^-1・3a=a²-a+1=(a-1/2)+1/1 D D, 軸, f(k) に着目 グラフ利用 4 よって, D>0は常に成り立つ。 [2] 軸x=a+1について すなわち -2<a<2 [3] f(-1)≧0から (−1²−2(a+.1)・(-1)+3a≧0 3 ゆえに 5a+3≧0 すなわちa≧- [4] f(3) 20 から 32−2(a+1)・3+3a≧0 ゆえに -3a+3≧0 すなわち a≦1 ①,②,③の共通範囲を求めて 3 ...... 4 (*) (+) ³1- +res @TOMB (2. -2 3 5 1 2 2 a 2次方程式についての問 題を, 2次関数のグラフ におき換えて考える。 この問題では, D の符号, 軸の位置だけでなく,区 間の両端の値f(-1), f (3) の符号についての 条件も必要となる。 |-1<(軸) <3 YA + |-1 ★の方針。 ≦a≦1 5 注意 [1]の(*)のように,αの値に関係なく、常に成り立つ条件もある。 ONa+1 + 3 x ③ 128 ような定数αの値の範囲を求めよ。 練習 2次方程式2x2-ax+a-1=0が-1<x<1の範囲に異なる2つの実数解をもつ 211 3章 1 2次不等式 13 x= 6 -31 te 6) a

答え教えてください☺︎♪

() weight again. She needs some exercise. 2 kept on 3 put on 4 taken on ) living in New York for fifteen years. 3 going 2 done ). We can't follow you. 3 rapid 4 swift 2 quick 04 After my retirement, I moved to the north of Hokkaido where I didn't kn 【空所補充四択】 ( )内に入る最も適当な語(句) を選びなさい。 01 My mother has ( stayed on 02 Karen's ( 1 been 3 Please don't speak so ( Rayo 2014-2020 1 fast □6 2 kind 3 thing Ⓒ1 distance 4 soul 5 X: Why was Hana angry when she received her report results? Y: Because the teacher gave her a B, but she thought she 3 pursued 1 deserved 2 presented 4 replaced She (p) to church regularly, but now she never goes. 3 used to going 07 6 O Didn't we have better 3 Had we better not to was used to go 2 used to go Yearlyz ) start at once?" "Okay, let's start now." "It looks like rain. ( 1 make 2 get 9 All we could do at that time was ( Ⓒhope 2 to hope 10 "I'd like to make a reservation ( open tables at that time." 1 at 6:30 for 2 at 6:30 to 4 have 2 Did we have better not 4 Hadn't we better (フェリス女学 ☐8 I'm working right now and I cannot leave, so I'll () my friend to drive home. 3 let ) a miracle. 4 is used to go 3 hope for ) an A. 11 There are still quite a ( considered to be equal. 1 few 2 little 3 many 12 I was caught in a traffic jam. I'm sorry to have ( keep you waited 3 kept you waited 2076 (B*#*# 4 that we hope ) three people." "I'm sorry. We ha 4 have 4 on 6:30 to (717 3 on 6:30 for ) countries where men and women a 4 much ) so long. 2 keep you waiting 4 kept you waiting

教えてください!!至急です

3 右の図のような直角三角形ABCがあります。 点PはBを出発して、 毎秒2cm の速さで辺BC 上をBからCまで動きます。 点PがBを出発 してからx秒後の三角形 ABP の面積をycm² とします。 次の問いに答えなさい。 (1)yをxの式で表しなさい。 (2) x,yの変域をそれぞれ求めなさい。 A 5 cm The B y cm AJtage tag P — 10cm の変域 yの変域 (3) 三角形 ABP の面積が15cm² になるのは, 点PがBを出発してから何秒 後ですか｡

これを使ってる人いませんか？ 答えがないので答え合わせができなくて困っています 持っている人は送ってほしいです お願いします🙏

CROSSREALL CROSSBEAM 総合問題集 15 All-around Exercises for Your English Skills hospital finally Reading Comprehension Grammar & Usage Writing & Expression Rapid Reading Listening & Dictation Vocabulary & Idiom ÉMILE S1 Standard-book1 Revised Edition #

写真の(3)についてですが、「20℃の水100ｇに32ｇ溶ける」ということは、どうすれば求められるのですか？

例題 14 溶解度 硝酸カリウム KNO3 の水 100g当たりの溶解度と温度との関係をグラフに 示した。 次の(1)~(3) の各問いに答えよ。 (1) 50℃ 400g に KNO3 は何gまで溶けるか｡ の水 (2) 30℃の水 50g に KNO3 を11g溶かした水溶液を冷やしていくと,何℃ で結晶が析出し始めるか。 (3) 60℃の水100g に KNO3 を 80g 溶かした水溶液を20℃に冷却すると, 結晶は何g析出するか。 指針 溶解度はふつう, 溶媒 100gに溶かすことがで きる溶質の質量 [g] で表す。 すなわち, 溶媒 100g で 飽和溶液をつくると、その質量は ( 100+溶解度の値) 〔g〕 となる。 解答 (1) グラフより, 50℃の水100g に KNO3 は 85 g溶ける。よって、水400gに溶ける質量は、 400g = 3.4×102g 答 85 g X- 100g AND A SU FIGU 溶解度[g/100g水] 120 100 80g 60 40 20 0 0 10 20 30 40 50 60 70 温度 [℃] (2) 水 50g に KNO3 を 11g 溶かした水溶液は、水 100g に KNO3 を 22g 溶かした水溶液と濃度が 同じである。 この水溶液を冷却すると10℃で 飽和溶液になり,これ以上温度を下げると結晶 が析出する。 答 10° (3) KNO3 は、20℃の水100gに32g しか溶けな いから, 析出する結晶は, 80g-32g=48g 答 76 AGNEHE

文章を読んで上の1〜4の問題を解くものです。 分からないのでお願いします

3. Answer the following questions. 1 What is the difference between UNIX and Linux? 2 3 4 Choose one of the words in italics in the text. What is the definition of the word you have chosen? What are the three levels of a Linux system? What are the two main functions of the kernel? [Reading Text] UNIX was initially developed by researchers at Bell Labs in the 1970s. Today, UNIX and its variants are widely used mainly on servers. By far, the most well- known UNIX-like operating system is Linux. Linux is available in different distributions which include the Linux kernel and different collections of software. These distributions have various user interfaces, many experienced users preferring the command-line interface, or shell. Linux distributions include a range of software including text editors. memory. While the mechanics of Linux and other Unix operating systems are complicated, the components of a Linux system can be grouped into three levels. The lowest level is the hardware, such as Central Processing Unit (CPU) and The next level is the kernel. It enables communication between hardware and software, by providing instructions to the CPU and other hardware. The programs that are running on the system, or processes, make up the top level known as the user space. Processes in user space generally only have access to a restricted amount of memory and operations, this is called user mode. The kernel runs in kernel mode which allows it unrestricted access to hardware resources. The kernel provides functions such as process management and memory management. A computer only has limited Random Access Memory (RAM) and processor cores. Process management allows the system to run multiple programs (processes) at the same time even if the CPU can only execute only a few processes at a time. Memory management allows applications to share the system's memory while avoiding potential issues such as memory leak. Included with the kernel are device drivers that provide an interface for applications to communicate with hardware, such as hard drives. System calls allow user processes to access features that are executed at kernel mode, for example creating new processes.

どう解くのか全く分かりません。教えて欲しいです。

次の問いに有効数字2桁で答えよ。 (1)硝酸カリウムの溶解度は10℃では22g/100g水, 80℃では169g/100g水であ る。80℃の硝酸カリウムの飽和溶液100gを加熱して20gの水を蒸発させ, 10℃に冷却した。何gの硝酸カリウムの結晶が析出するか。 AGRS) (2) 硫酸銅(ⅡI) の溶解度は, 20℃では20g/100g水, 60℃では 40g / 100g水である。 60℃の硫酸銅(ⅡI) の飽和溶液280gを20℃に冷却すると,何gの 硫酸銅(ⅡI) 五水和物の結晶が析出するか。 ただし, 銅の原子量は64とする。トロ

新高校2年生です。 日本史についての質問です。 私の学年から日本史Bから日本史探求に変わりました。 兄(大学2年生)の一問一答を使って教科書に線を引いていたのですが、教科書にない語句が多いです。 新課程の一問一答でおすすめのものはありますか？ 大学受験まで対応出来るものがい... Read More

この1〜4の問題お願いします🙏🏼🙏🏼

3. Answer the following questions. 1 What is the difference between UNIX and Linux? 2 3 4 Choose one of the words in italics in the text. What is the definition of the word you have chosen? What are the three levels of a Linux system? What are the two main functions of the kernel? [Reading Text] UNIX was initially developed by researchers at Bell Labs in the 1970s. Today, UNIX and its variants are widely used mainly on servers. By far, the most well- known UNIX-like operating system is Linux. Linux is available in different distributions which include the Linux kernel and different collections of software. These distributions have various user interfaces, many experienced users preferring the command-line interface, or shell. Linux distributions include a range of software including text editors. memory. While the mechanics of Linux and other Unix operating systems are complicated, the components of a Linux system can be grouped into three levels. The lowest level is the hardware, such as Central Processing Unit (CPU) and The next level is the kernel. It enables communication between hardware and software, by providing instructions to the CPU and other hardware. The programs that are running on the system, or processes, make up the top level known as the user space. Processes in user space generally only have access to a restricted amount of memory and operations, this is called user mode. The kernel runs in kernel mode which allows it unrestricted access to hardware resources. The kernel provides functions such as process management and memory management. A computer only has limited Random Access Memory (RAM) and processor cores. Process management allows the system to run multiple programs (processes) at the same time even if the CPU can only execute only a few processes at a time. Memory management allows applications to share the system's memory while avoiding potential issues such as memory leak. Included with the kernel are device drivers that provide an interface for applications to communicate with hardware, such as hard drives. System calls allow user processes to access features that are executed at kernel mode, for example creating new processes.