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英語 高校生

1.4.5.6.12.13を教えてください 答えはA B B A D A です 見にくくてすいません

則議 1 ilove my children, but when they are around.itishardtogetanywork 1 | Adone B. do C. doing D. did 2. All employees are required to receive appropriate training |-2 | they ae allowed to operate heavy machinery. Afor B. whereas C. before Drather 3. Many studies suggest that aerobic exercise | 3 ]stress。 depression, and anxiety. A reduces B. reducing C. that reduce D. be reduced 4. Some reseachers argue that exercise is better than drugs for [4 | depression. A perecting B. preventing C. preferring D. perfoming 5. The populations of two minority groups in the US, Latinos and Asian Americans, have shown continuous | 5 ]inrecent years. Alength B. growth C. weight D. size 6. For security reasons it is important 6_] your passwords regularly. A. that youchange 。 B. which youchange で. whatyouchange D. whattochange 7. Tslept in today until 10 AM. When 1 got up, everyone |-7_」 and 1was alone. A. has already left B. would have already left C. had already left D. was already left 8. The European explorers 8 ] in North America in the 15! century believed that they had landed in India. A。 who amived B. tobe amived C. being arrived D. amived 9. 1am really [9 」 with what yow've accomplished in making a diHference in people's lives. A impression B. impressing C. impressionable 。 D. impressed 10 Recent data indicate that the | 10 ] of water in he city has dropped over the last decade. Aconsumer B. consume C. consumed D. consumption 1L The results of a 14-year old study しTエ ] that elderly people are growing healthier and more jndependent. A react B. reform C. relocate D. reveal 1 This innovative use of technology resulted in better 12 |in product quality A consisting B. consistent C. consistently D. consistency 13 Many teachers are to use technology in class because of their low level of computer competence. Ahesitant B. hesitate C. hesitation D. hesitated 1 According to a UN. study fewer Chileans were living in poverty 4 weak economic growth. A because of B. dueto C. despite D. instead of js Many people believe that the primary job of business managers is | 15] with numbers. A which deals B. them deal C. todeal D. deal

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数学 高校生

青線をつけたところで、判別式で≦とする意味がわかりません。

上 702 すべての実数で成り立っ本き式 。 ※※ ーーの和人を満たすような定数の仙の箇をポめよ - いり すべでの天数*に対して 不和天 +kr+を43>0 が破りっ. の 2次不等式 4x"+(4寺3)x+ル0 が請をもたない ルトクラフがトに店かにあを半べ>夫との人人に日する. ウ すえられた2凌不等式の (た辺=0 としたときの定式をの| とするを 2次関数wm寺太+ん13 のグラフでえると、行の較の ようになっていればよいので | yrTk WS - イサべでの大計り 判別式 のニだー4(+3)<0 | であればよい Fe 1は明、 ーー >還のケ ③は. だー4&+3)<0 ラフはTにで人 アー4k-2cO と上條をもた (&+2)(&-6)<0 より, 2<g<6 2 よって. 求めるたの値の電因は。 一2<ょ<6 2 な"(43)xエ>0 が解をもたない 1 2上企き大とあるの で すべてのェで Ac寺(&和3)x+を0 の いま2次不等式であるから。 As0 ーー 4 (RAのy洗)a0 | 4<0 っまり | Data 3っao であればよい をHBしでもょいが ②より。 Ag-1 3zA =は 計人和潤となるた SDA0。 は4 ち。 人KOを用い POYN 0 のとき すべての*について. 8次の係数 >0 判列式 の<0 2次の係数 c<0 判別式 の<0 arte | ererece | <選 人Mio2 ijでは 則是が デキなん3>0 となっているので、判軸式のも の>0 よかん導いすることが多い。 グラフをかいてしっかり逢巴することが大 遇 うす<のk攻rr(34ー2xー246>0 が成り立つような定数たの所 の科困を求めよ っ208 40 a41 1 2穫とその 、 187 | gr 顎

解決済み 回答数: 1