問題と解答です。 （2）の問題で、なぜ［1］と［2］に分ける必要があるか分かりません。教えてください！

(x¹+y¹)(x² + y²) ≥(x³+y³)² +2xy+5y-4x-8y+5≧ 4x²+y¹≥x³y+xy³ 52 次の不等式を証明せよ。 また, 等号が成り立つときを調べよ。 2|a|+3|6|≧|2a+36| (2) 2|a|-3|6|≦|2a-36| □ 53 不等式√x2+y2≦x|+|y|≦√2√x+y”を証明せよ。 >0のとき次の不等式を証明せ A 25.

解き方が分かりません。 だれか答えと解説をお願いしたいです。 単元は高校数学の図形の性質です。

1. 右の図において、 AP: PB=1:2 PQ:QR=3:4である。 次の比を求めなさい。 (1) BC: CR (2) AQ : AC (3) LAPQ : LABC 2. 右の図において、 x,yの値を求めなさい。 B P A A C E 40° F 70° B C R

（3）について答えはthese new types of cementまたはnew types of cement ですがthe new types of cement でも大丈夫ですか？

6 2019年度 英語 Ordinary Portland cement-t produced by baking lime in a kiln and emits approximately one ton of carb a kiln and emits Cement production is responsible for cement. dioxide for every ton of approximately 5% of global man-made CO2 emissions, according to the World Business Council for Sustainable Development. Cement does absorb some carbon dioxide back from the atmosphere over time, One 2016 study estimated that between 1930 and 2013, the equivalent of 43% of CO2 released from lime during heating was reabsorbed by - although that percentage does not include carbon concrete products worldwide dioxide emitted by the fossil fuels burned to heat kilns, a significant contributor of says. Fennell notes. 東京医科歯科大前駅 - the most common form in concrete- CO2 emissions during production. Unfortunately, this absorption comes at a price, particularly when cement is used in structures that feature steel reinforcement bars (rebar) within concrete. vl(As) CO₂ moves through cement it changes the pH of the surroundings, Fennell says. Concrete loses its alkalinity and, when moisture and oxygen are present, causes the rebar to rust. 2) ad "Rusting steel can expand with great force to as much as nine times its original dimensions if you add up all of the layers of iron oxide," says Randolph Langenbach, an international consultant in building conservation. This expansion causes the concrete to crack, flake and crumble. Svi aft ni adosband huma Degradation is a massive concern, he argues, and problems are not limited to rusting rebar. Everything from air pockets left in the concrete mix when it's laid to salt air buffeting coastal-facing walls, or the use of beach sand in the concrete, can shorten a building's lifespan. As one specialist once put it to Langenbach: "If it ain't cracked, it aint concrete."qubong ao yas guidtyns ogde stornos 90 s of fshoqml is vatns mash *** long llopsd lust ay to Given the concerns about the environmental impact and structural longevity of concrete, why do we continue to build with it? addi Simply put, concrete is cheap, versatile, quick to erect and requires no of weight J

最小目盛りの1/10まで読み取る、の意味が分かりません😭この問題を使って解説お願いします！

(9) 次の図の端子につないで電流の大きさをはかると, 電流計の指 針は①~③のようになりました。それぞれの電流の大きさを読みと りなさい。ただし,単位は使用した-端子の単位で答えなさい。 (1) 2 (3) ell 50mA 500mA 5A +D.C. 1 2 3 0 Munduntual + 50mA 5A Lilabounder 100 10 20 30 40 1000 100 200300 400 500mA/ (10) (0) LET Tot. 山 50mA 500mA 5A +D.C. launtruluntal+ 5A hustunhum 10 0 10 20 30 40 50mA 1000 100 200300 400 500mA/ A 0 1 23 hu 50mA 500mA 5A +D.C.\ 1 2 3 5A untual+ 100 10 20 30 40 50mA 1000 100 200 300 400 500mA A 10 -funtandu

棒線の意味を教えてください

B A M 8 E C

69. なぜこの解き方では答えが求まらないのでしょうか？？ （指針ではOH･AB=0,OH･AC=0だと書いていますがOH･BC=0も成り立つと考えこれを用いて求めようとしました。）

基本例題 69 平面に下ろした垂線 (1) 00000 空間において, 3点A(5, 0, 1),B(4,20, 0, 1,5) を頂点とする三角形 ABCがある。 原点O(0, 0, 0) から平面ABCに垂線を下ろし, 平面ABCとの 交点をHとするとき, Hの座標を求めよ。 MOKE LAANE 指針点 0 から平面ABCに下ろした垂線の足Hに対して, 点Hは平面ABC上にあり,かつ,直線OH は平面ABC に垂直である ととらえて考える。 ... HOX- 外直線OH は平面ABCに垂直であるから、直線 OH は平面ABC 上のすべての直線と垂直である。 ただよって、OHA, OHAC ゆえに OH・AB = 0, OH・AC=0 する単位べク |解答 AB=(-1,2,-1), AC = (-5, 1,4)×0+0×S+(I−)×(1 ①点Hは平面ABC 上にあるから, AH=sAB+tAC (s, tは実 CHONDRAL 114 60 数) (*) とおける。 ゆえに OH=OA+AH $1-01x6 =OA+sAB+tAC =(5,0,1)+s(-1, 2, -1)+t(-5, 1,4) ①00× =(5-s-5t, 2s+t, 1-s+4t)・ OH (平面ABC) であるから OH⊥AB から OH･AB=0 よって ゆえに OHACから 2s+t=2 -(5-s-5t)+2(2s+t)−(1¬s+4t)=0 OH･AC=0 よって ゆえに ② ③ を解いて よって, ① から ...... -5(5-s-5t)+1・(2s+t)+4(1-s+4t) = 0 s+14t=7 OHLAB, OHLAČ S= 7 9' 9 H(2, 2, 2) A t= - (801) A C x TEL ZA HA4 C OH B HO 重要 71 ****** CA SCORT! B (8)=(2004)+(A)+¹(SADA) A (*) OH =LOA+mOB+nOC, l+m+n=1として考えても よい｡ (0) 487 2章 9 位置ベクトル、ベクトルと図形

Whatの後の名詞は複数形になりますか？ What seasons などです

なぜdに入るのが③なんですか？④ではないのですか？

Who was the first scientist? It wasn't Isaac Newton. Today, it is generally acknowledged that Newton never thought of himself as a scientist. He couldn't, for the word didn't exist in was not only a scientist, but the greatest scientist who ever lived, yet (Newton his time. Newton thought of himself as a "philosopher," a word that (a)dates back to the ancient Greek thinkers and that comes from Greek words (b)meaning "lover of wisdom." There are different kinds of wisdom we might love, of course. Some philosophers are concerned chiefly with the wisdom derived from the study of the world about us and the manner of its workings. The world { c ℗ about 2 be 3 can 4 referred 5 to 6 us as "nature," from the Latin word meaning “birth." Nature, in other words, is everything that has been created or that has come into being. Philosophers who deal primarily with nature are, therefore, "natural philosophers." Newton thought of himself as a natural philosopher, and the sort of thing he studied was natural philosophy. Thus, when he wrote the book (d) he carefully described his three laws of motion and his theory of universal gravitation—the greatest scientific book ever written-he called it (in Latin) Philosophiae Naturalis Principia Mathematica, which in English is The Mathematical Principles of Natural Philosophy. The Greek word for "natural" is physikos, which in English becomes physical. Natural philosophy might also be spoken of as "physical philosophy, which can be shortened to “physics.” on. Physics As natural philosophy grew and expanded, all kinds of special studies developed. People began to speak of chemistry, of geology, of physiology, and so was whatever was left over, so it didn't suit as a general overall word for natural philosophy. Yet you needed some such short word, for natural philosophy was a seven-syllable mouthful.

（4）について 3枚目自分の解いたやつでは、[H+]の値からphが明らか塩基性になってしまうのですが、この解き方ではなぜダメなんですか？？ ちなみに沈殿が生じ始めるときの[S2-]の値は合っています。 こたえは4.4です

9185. <硫化物の溶解度積〉 H2S は二価の弱酸であり, 水溶液中では 二段階で電離する。 一段目の電離定数K」 は, 1.0×10-mol/L,二段目の電離定数K2 は, 1.0×10-14 mol/L である。 また, 一段目と 二段目を合わせた反応の電離定数Kは, K = (A) (mol/L) と求まる。 陽イオンを含む水溶液に H2Sを通じるとH2Sの濃度は0.10mol/L になる。 ここで 水 溶液の水素イオン濃度[H+] が1.0mol/Lであれば, 硫化物イオン濃度 [S2-] は (B) mol/L と求まる。 銅(II)イオン Cu²+ と亜鉛イオン Zn²+ の濃度がそれぞれ 0.10mol/Lであれば、 沈殿 を生じないと仮定するとモル濃度の積は [Cu²+][S²-]=[Zn²+][S²-]=(C) (mol/L)^ と求まる。 硫化銅(ⅡI) CuSの溶解度積は 6.5×10-30 (mol/L) であるため, CuS の沈 殿は(生じる・生じない)。 また, 硫化亜鉛ZnS の溶解度積は 2.2×10-18 (mol/L)2 で

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ⅡI. 次の英文の空欄 ( 11 ) から ( 30 )に入る最も適切な語句を, a.〜d.の中から 1つ選びなさい。 解答は解答用紙1枚目 (マークシート方式)の所定の解答欄にマークし なさい。 Huy Fong Foods, the southern California company that produces 20 million bottles of sriracha (1) annually, has experienced a low ( 11 ) of red jalapeño chili peppers in recent years made worse by spring's crop failure. What is the cause? ( 12 ) weather and drought (2) conditions in Mexico. It's not (13) chili peppers. Mustard producers in France and Canada said extreme weather caused a 50% reduction in seed production last year, ( 14 ) to a shortage of the condiment on grocery store shelves. Blistering heat, stronger storms, droughts, floods, fires and changes in rainfall (15) are also affecting the cost and availability of staples, including wheat, corn, coffee, apples, chocolate and wine. The climate crisis is increasing the intensity and ( 16 ) of extreme weather events — and it's putting food production at risk. "Almost everything we grow and ( 17 ) in the US is facing some climatic stress," said Carolyn Dimitri, nutrition and food studies professor at NYU. Wheat and other grain crops are particularly ( 18 ). In the Great Plains region, (19) most of the US's wheat is harvested, drought depressed the winter crop. Farmers are abandoning farmland used for growing winter wheat in the US-primarily in Texas and Oklahoma - at the highest rate since 2002. Meanwhile in Montana, flooding is (20) grain crops. The impact of the climate crisis on grain crops ( 21 ) beyond the US. In India, a fierce heatwave damaged the wheat crop ( 22 ) record-setting temperatures throughout the spring and summer. As Delhi hit 49°℃ in May, the government placed a ( 23 ) on wheat exports, driving up prices even further than the rise following Russia's invasion of Ukraine. Food production is a driver of the climate crisis and a (24) of it. ( 25 ) the food system will require a wide variety of actions, including increasing crop diversity, delivering climate (26) to farmers around the world, expanding conservation programs and offering growers insurance that pays out when an index such as rain or wind speed falls above or below a fixed limit. The Biden administration is supporting research into "climate-smart" agriculture, an approach to managing cropland, forest, fisheries and cattle that attempts to address the intersecting challenges of the climate crisis and food ( 27 ). In May, the UN secretary general, António Guterres, said that climate-related disasters and extreme weather were a driver of global hunger and that 1.7 billion people ( 28 ) by the climate crisis over the last decade. Experts say (29) action is taken, we can expect to see increased food prices, decreased availability and conflict over water, which will primarily affect poorer countries and low-income Americans, (30) everything from school lunches to food aid programs. © Copyright Guardian News & Media Ltd 2023 (1) sriracha (2) drought かんばつ 世界中で人気のチリソース