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In a set of four numbers, the first three are in an arithmetic sequence with a common difference of -12 and the last three are in a geometric sequence. Provided the first number equals the fourth, find the four numbers. 数学についての英文です。 よろしくお願いします。
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４つの数があります。 先頭から３つの数は、公差-12の等差数列を成しています。 末尾から３つの数は、等比数列を成しています。 最初の数と最後の数が等しいという条件において、 この４つの数を求めなさい。 {16, 4, -8, 16} でしょうか。
関連するQ&A
- FIBONACCI NUMBER
今アメリカの学校の数学の宿題をしてるんですが直接英語で問題出させてもらいます。（日本語に訳そうと思ったんですがいってる意味が不確かなので訳せませんでした。ごめんなさい） there are so many relationships involving the fibonacci numbers that a journal and numerous books have been devoted to them. here are two that you are to investigate: 1 let S(n) be the sum ofthe first n Fibonacci numbers. Find a formula for the sequence formed by the partial sums S(n) 2 let Q(n) be the sum of the squares of the first n fibonacci numbers. find a formula for Q(n) in terms of the nth fibonacci number, F(n) 一応自分でfibonacci numberはgeometricなので合計の式はSn=An(1-r^n)/1-rを使うと推測させてもらいましたがそれからどうするのかがさっぱり分かりません。
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Low cloud and rain obstructed air observation of the bombardment, which soon fell behind schedule; on 25 June aircraft of the four British armies on the Western Front, attacked the German kite balloons opposite, four were shot down by rockets and one bombed, three of the balloons being in the Fourth Army area. Next day, three more balloons were shot down opposite the Fourth Army. During German artillery retaliation against the Anglo-French bombardment, 102 German artillery positions were plotted and a Fokker was shot down near Courcelette.
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The Battle of Kraśnik started on August 23, 1914 in the province of Galicia and the adjacent areas across the border in the Russian Empire, in northern Austria (in present-day Poland), and ended two days later. The Austro-Hungarian First Army defeated the Russian Fourth Army. It was the first victory by Austria-Hungary in World War I. As a result, the First Army's commander, General Viktor Dankl, was (briefly) lauded as a national hero for his success. The battle was also the first of a series of engagements between Austria-Hungary and Russia all along the Galicia front. The battle took place soon after the commencement of hostilities on the Eastern Front. In the East, late August and early September 1914 were characterized by a series of small-scale engagements between the Central Powers, Austria-Hungary and Germany, and the Allies, Serbia and Russia. Both sides rushed to mobilize their armies and thrust them headlong toward their frontiers in order to secure their borders and advance upon enemy territory as early as possible. Most of the early clashes tended to result in Russian and Serbian victories. By August 23, Russian forces penetrated fifty miles into Prussia. Austria-Hungary had made minimal advances into Russian Poland by occupying Miechów, unopposed, on August 20. During this early period the First Army was given orders issued by Austro-Hungarian Chief of Staff, Franz Graf Conrad von Hötzendorf, to head toward Lublin and Brest-Litovsk in Russian Poland in order to make contact with the enemy and reach the strategic Warsaw-Kiev railroad. The First Army moved along the eastern bank of Vistula River and was to cross the San River, in the far northwest corner of Austro-Hungarian Empire. The First Army was accompanied by the Austro-Hungarian Fourth Army on its eastern flank. At the same time Russian commander Nikolai Ivanov had ordered the Russian Fourth and Fifth Armies to strike Austria-Hungary in the north. Dankl's First Army would make contact with Salza's Fourth Army at Kraśnik while the Austro-Hungarian Fourth Army met the Russian Fifth in the Battle of Komarów. These maneuvers were to become part of a broader battle, the Battle of Galicia. Going into the battle of Kraśnik, the Austro-Hungarian forces enjoyed two key advantages over their Russian opponents: superior numbers and a better strategic position. Dankl's First Army enjoyed a numerical advantage of ten and a half infantry and two cavalry divisions to Baron Salza's six and a half infantry and three and a half cavalry divisions. Chief of Staff Conrad's orders for the First Army further compounded Austro-Hungarian superiority by placing a larger than expected concentration of force further west than Ivanov and Russian Chief of Staff, General Alexeyev, had expected. The Battle of Kraśnik クラシニクの戦い
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Appearing in the tournament for only the second time in his life, Ryo achieved his first ever hole in one on the tour on the second day of play, taking him to three under and tied for second place at the start of the final day. ちょっと意味が分かりにくいです どなたかご教授お願いします(_ _;)
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During the three days of fighting the 1st and 2nd Brigade of the 8th Tudzha Division suffered on average 21% casualties and abandoned many of their artillery guns which further weakened them despite that they managed to retreat to a new position around Lerin. Their defeat forced the western parts of the right wing of the Bulgarian First Army also to retire and thus opened the way for further Allied attacks that would develop in the three-month-long Monastir Offensive.
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With no orders from No. 3 Section Headquarters as to the method of evacuation of casualties of the three divisions, prisoners of war were transported back to Kantara by train before the wounded, generating amongst all ranks a feeling of resentment and distrust towards the higher command which lasted for a long time. The Battle of Romani was the first large-scale mounted and infantry victory by the British Empire in the First World War. It occurred at a time when the Allied nations had experienced nothing but defeat, in France, at Salonika and at the capitulation of Kut in Mesopotamia.
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On the night of 27 August, three Romanian armies crossed the largely undefended Carpathian passes, meeting only sporadic resistance by Austro-Hungarian border units. The Romanian plan (Hypothesis Z) called for a rapid advance to the strategically important Mureş River with Budapest as the ultimate target.The main advance was carried on by the Second Army, with the First and Fourth on its flanks. The second Army crossed the border on the night of 27–28 August and advanced into Transylvania. In the first phase of the offensive (27 August-2 September), the Second Army conquered the Lepșa, Putna, Năruja and Zăbala Vallyes and advanced towards Covasna.
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Joffre issued instructions on 18 August but held back the Third and Fourth armies because air and cavalry reconnaissance found few German troops opposite the two armies, only a large force moving north-west 40–50 kilometres (25–31 mi) away. On 19 August, the Fourth army of General Fernand de Langle de Cary, was ordered to occupy the bridges over the Semois but not to advance into Belgium until the German offensive began. A premature attack would advance into a trap, rather than give time for the Germans to empty Luxembourg of troops before the French advanced. On 20 August the German armies in the south attacked the French first and Second armies and next day the Third and Fourth armies began their offensive. The Fourth Army crossed the Semois and advanced towards Neufchâteau and the Third Army of General Pierre Ruffey attacked towards Arlon, as a right flank guard for the Fourth army.
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In the diagram on the under、each number from 1 to 16 is assigned to each of the 16 squares so that the sum of the 4 numbers in any row、column or diagonal is the same．(This kind of square is called a magic square) Seven numbers are already assigned．(Organizing skill) A：Find the sum of four numbers in a row、column or diagonal． B：Find the numbers for a & h．
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ありがとうございます。 おかげで助かりました。