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英語 高校生

下から15行目のthrow whichのthrow とはなんですか?

y II Day 12 15 5 Negro Leagues Baseball was a collection of major and minor-league baseball leagues that were the first to showcase black team sports on intertwined with the African American and American experience not only a national scale. Launched in 1895, the leagues, as with jazz, became as a cultural element, but as a lucrative business endeavor. team The leagues were not under central management, and schedules and composition League, were changeable from season to season. Appearance and disappearance of leagues was common: the National Colored Baseball for instance, collapsed after only two weeks of operations. Latins, especially Cubans, were also a significant presence on teams. In these ways, the Negro Leagues were quite similar to their white counterparts which would eventually consolidate into Major League Baseball. Blacks near the beginning of the 20th century had only a fraction of whites' purchasing power, so the emergence of the Negro Leagues might have seemed unlikely. However, the Negro Leagues had two main draws that accounted for its business success. The first was a deep reserve of athletic talent. After blacks were formally excluded from white leagues in the 1880s, the Negro Leagues were the sole organization through which black players could work professionally. The quality of Negro Leagues 20 players was high, and substantiated through exhibition matches between Negro Leagues and Major League teams: over the years, both had their fair share of wins and losses in these matches. Another reason for the success of the Negro Leagues was an increasingly affluent black fan base. Driven by American industrialization, blacks were concentrating in major cities such as New York City, Chicago, and Atlanta. Usually barred by custom-and in the South by law-from attending many white entertainment outlets, blacks turned to Negro Leagues games. As a result of these factors, by the 20th century the Negro Leagues were earning a combined millions of dollars. This profitability ended with the desegregation of Major League Baseball. Black fans began attending Major League games, starving the Negro Leagues of its core revenue source. By 1951, the Negro Leagues had ended, although a succession of black star athletes in the Major League had begun.

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英語 高校生

②に入る単語がwhereになる意味がわかりません。場所を意味する文なのかも分かりません😭

A h A Humpback whales visit California to feed in the summer and autumn before migrating south 15 to reproduce off the coast of Mexico. They are the world's most endangered among their species. An estimated 35,000 to 40,000 remain in the wild. The Marine Mammal Center says the main threats facing humpback whales are strikes from ships and getting caught in fishing and waste equipment. The Whale Safe system is designed to identify and protect several different species, 20 including humpback, blue, fin and gray whales. It uses three methods to do so. First, it uses devices that float - known as buoys - to record sounds the whales make. Second, it uses computer models to process current and historical ocean data to predict where the whales are most likely to be. Third, it permits trained observers and citizens to report whale sightings through a mobile app. Developers of the system say the expansion of Whale Safe to San 25 Francisco demonstrates that the system can be successfully used in more places in the United States and around the world. 年度 一般前期 1月30日 Jeff Boehm is a leader of the Marine Mammal Center. He said the Whale Safe system combines the latest technology with thoughtful conservation efforts "to create a solution to reduce risk to whales." Boehm added, "This is ( 2 ) tech meets Mother Nature for the benefit mads S 30 of marine life." avili .1 (0) 英語 Douglas McCauley is director of the Benioff Ocean Science Laboratory. He said in a Lilline of whales hv ship strikes is "an avoidable problem." "We can't any は、

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数学 高校生

赤で囲っている部分が何をしているか分からないです。 なぜ場合分けしているのか、(4,3)における接線を求めているのかを教えてください。

x+y2≤ 25 座標平面上に円 C: x2+y2 = 25 と直線l: x+2y=10 があり、連立不等式x+2y≦10 y20 (2) C上の任意の点をP(s,t)とおく。 の表す領域をDとする。 (1) 円Cと直線lの共有点の座標を求めよ。 また、 領域Dを図示せよ。 PにおけるCの接線の方程式はSou+ty=25③ ③は点(60)を通るため6S=25 すなわち S=… ④ また、PC上の点なのでS+t2=25...⑤ (2) 点 (6,0) を通る直線の中で 円Cと>0の範囲で接するような直線の方程式を求めよ。 (3) は 6sas10 を満たす実数とする。 点 (x, y) が領域D内を動くときの最小 値を とする。 αの値で場合分けをして, m をαを用いて表せ。 x-a (配点 40) ②) (1) C:x+y=25 … D, l x+2y=10 … © (x=10-2%… © ①.②より 4(5-+y=25 58-400+75=0 8-88+15-0 (y-3)(1-5)=0 y=3.5 · Crlの共有点は (4,3),(0.5)_ l より ピ=25-(2).25(g-25) 25x| = 36 t>0+) t=5√π ③より @dy 2x+5y = 25 Friths 5x+√lly = 30_ びわる5x+y=30 (3)a=kとおくとy=klx-a)…⑥ l ⑥は定点(a,O)を通る傾きkの直線。 -5 10 15 0 領域は斜線部分。 -5 ただし、境界線を含む。 kx-o-ak. 53 10 7x 456. "5+Jiy=30 点(4.3)におけるCの接線の方程式は4x+3=25 この接線の〆切は翠 (ア) 6≦a≦のとき、mは⑥とCが接するときのkの値。 -Ikx0-0-kal=5 すなわち ko より k=- JK+ト1円の中心から画付きでヘチョリ k=-55 √0-25 (イ) sas10のとき、mは⑥が点(4,3)を通るときのkの値。 (ア)(イ)より, m= 5 vasz (6xas) √03-25 3 ·4-a ( 2 ≤a≤10) "

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