想問第九題 謝謝

n 9 n (A) 31 (B) 33 (C) 62 (D) 64 9 已知有一等差數列1、2、3、………,其前n项的乘積用 P, 表示,即 P。 有 項用 = 1×2×3×……Xn。若 Pss=32XL,且3與整數k互質,則整數a之值為何? (A) 25 (B) 26 (C) 27 (D) 28 DS 10. 已知有一個數列,其第n 項為n 除以3 所得的餘數,例如:當n=4時,4除 以3的餘數為1,得第4項的值為1。若前項的平方總和為106,則k之值為

請幫我對答案 謝謝❗️

第19章 其他重要句型文法 *0. 2 you relax. (A) 3 up, Kim. you are. 選擇題 1. I just found out yesterday (I weigh 80 kilos) I've gained two kilos in a month. (A) that (B) which 四 gain 增加 (C) what (D if smoking helps you relax might be true, but there are some better ways to help 四 relax 放輕鬆 (A) It (B) Whether (C) That (D) X up early, or you will miss your first class. (A) Getting (B) Get (C) To get (D) Gets +(B) 4 there any fruit left in the refrigerator? (A) Is (B) Are (C) Have D) Will (B) @ I've heard some people have gotten cancer from smoking. 四 cancer 癌症 • (A) of (B) that (C) about (D) to *(13) 6. (A) Not to stand (B) Don't stand (C) Standing D Doesn't stand *(0) 7. Please the door. It's cold outside, and the wind is so strong. (A) do not open (B) not open (C) don't open (D) doesn't open *(0) 8. Kim: It there any pen-of mine on your desk? Ben: Yes, is one. Here (A) it (B) this C) that (D) there *0) 9. There only some water in the bottle. It's not enough for every one of us. (A) have (B) has (C) is (D) are (s) 10. There are millions of people the exciting game at a time. (A) watch B) to watch (C) watched D) watching ( 11 is said that Peter's father died two weeks ago. (A) It KB) This (C) That *(B) 12 It is a sad thing, (A) to Mr. Brown has been dead for two years (B) that Mr. Brown didn't live long enough to see his dreams come true (C) of me to hear the bad news (D) of Tom has made up his mind to leave here on time when you have a date with friends. (C) Do (D) Must (A) Will be (B) Always be (U) 14. It's convenient everyone can use the computer to do all the work. (D) X (C) that (A) for (B) to tomorrow or not. (B) 15. I am not sure whether Tom (C) came (D) coming (A) comes (B) will come b) They () 13

想問這兩題的解法 謝謝 （答案都是C)

9 (1) 20. 坐標平面上有 A(2,3)、B(0, b)兩點,且 AB= 29,則所有之值的乘積為何? (A) -6 (B) -8 ta (C) -16 (D) -18 ……」 21. 已知千蕙使用科學計算機依序輸入( 15) Shift 則螢幕顯示 3.8729,試求:1500+ -0.0015 的整數部分為何? (A) 36 (B) 37 (C) 38 联 (D) 39 FOA 2 9 x4

答案是B 想問為什麼 謝謝🙏🏻

2 分:選擇題(第1~25題) 1. 已知多項式A為x的四次多項式,多項式B為x的三次多項式,多項式C為x的四次多項 式,則下列有關多項式的四則運算,何者正確? (A)A+B的和為r的七次多項式 BA-C的差可能為x的三次多項式 (C) A×B 的積為的十二次多項式 (D) A-C 的商可能為r的一次多項式 EEE x 1+3y,則下列钻述。

我記得寫到有些題目會突然的加了一個負號 想知道是什麼時候會需要加負號呢

ex: cos 120º = cos (180-60) = COS 60' -hin 30 个 日 美国AP 三毛:正)

想問這題 謝謝

5 13 3 zory 19.求一元二次方程式 4(x-2)^+ 3 |x-21-10 =0的解,則x=. -

答案是1或-5 求算式 謝謝

11.若x+2(2nn-1)x + Sin-4為完全平方式,則rm = x° (2m –1)+4 A , = lor's 1 of 5

想問 1.已知一個正數比其倒數多2，求此數 請問是把正數設為x，所以式子是x=1/x+2嗎？ 2.直角三角形中，兩股的差為5公分，斜邊長為25公分，求此直角三角形的面積 如果我設一股為x，要怎麼列式子？

求過程 謝謝

PU - ( ) 8. 若方程式(x+4)-7(x+4)(2x-1)+12(2x-1)==0 的 兩根為a、b,則a+b=? FX 89 (A) – 35 - 9. (B) 35 . (C) 35 89 (D) 35 () 3

答案： m=4 x=2/3(重根）

2已知方程式有重根求未知數 已知x的一元二次方程式 mx2-3mc+9=0 有重根,求 in 的值及此方程式 的解。