想請問這兩題，謝謝🙇‍♀️

1 With thirty-five active volcanoes, Iceland is known as a land of seismic activity. In April 2 bringing chaos to transportation systems across a minor volcanic eruption on the island Europe. The eruption, 3 the Eyjafjallajökull glacier in southwestern Iceland, released clouds of ash that drifted across several countries in northern and Western Europe. For several days, nearly all flight in the region were with hundreds of thousands of passengers unable to start their 4 journeys or _5_stranded abroad. Pec (A) that was (B) there was (C) what was (D) it was QA (A) ended up (B) got involved in (C) gave rise to (D) arose out of

這題想問抽到三個數相同的機率為什麼是C9取3分之一

第5 頁 共6 頁 心 慈幼社為籌措活動經費,計劃在園遊會中發售一款9宮格刮刮樂 (如右圖所示),每張的9個空格裡有3個6,3個7,3個8。 買家從中任意刮開3格(超過3格則不予兌獎), 若刮中3個相同號碼,則可得獎金為該數字的100倍。 (例如:刮中3個6,可得獎金600元) 今此刮刮樂欲訂售價為每張50元,則該社團每張刮刮樂獲利的 期望值為 ③④ 元。 A 6x3 7x3/8x3 others. P $ 550 -650 -150 50 -6501-150 15 4 刮刮樂 請任選3格刮開 數字完全相同 數學甲 就可得獎金100倍哦! 8 16 492 q- 666 211150 nnn. 108 888 no -1950 800 -1150 2 27 - 315 8(x)=50- x(600+700+800)=25# D. △ABC中,sin4 = ∠B=30°,O為△ABC內切圓的圓心,且直線AO交BC於D,則

求詳解

4. 至少得2件的分法有131種 (E)每人至少得1件的分法有150 種 ③至少1:35-22 =243-32 10 如右圖,一棋盤式街道,由A到B走捷徑,則下列敘述何者正確? (A)任意走的走法有56種 過點Q的走法有 12 種 211 (B)經過點P的走法有30種 (C) 種 經過點P且經過點Q的走法有18 (D)經過點P但不經 (E) 不能經過點P或點Q的走法有38種 04560 30 180-120 the 240

求解

39 2.若三次函數 f(x)=-2x' +6x²-2,則/(3+5/7)+f(-1-5.5)= 3.已知三次函數y=f(x)的對稱中心點為(1,2) 且點 (2,1)與(3,-12)在此三次函數圖形上,若f(x)=a(x-h)+b(x-h)+k, 則數對(a,b,h,k)= f(x) = a(x-1)3+6(x-1)+2 1 T O The it IT 10

想要解theta

2.8 sing cose- & sing + co≤9 = 0· 8

想問一下cosTheta在圖中要怎麼知道他是哪個邊分之哪個邊？

如右圖,為一有向角,AB=2,BC=5,且∠ABC=90°, 求cos(180°+8)=_ 5 √29 西藏曲73,9081292°0 曲:0 OneA

想問這一題

一等比級數之比,前n项和Sn=48,前2n 項和 Szn = 60,則前3n項和Sam= 63: λ= 解 V # 若 答:63,3 Sn. Son-Sn S3n-Son 國 D 36 48 12.x-60 48 3 6. 144=48x-2880 288 288000 48 S 3024 = 481 48/3024 288 The *

求解

依 THE 6從0.1.2.2.3.3.3.4.5數字堆中:則: (1)任意取三個相異之汉字.可排放個三位权 (2)承第(小小小題,这些三位权中,有個3的倍权 (3)任取4個权字排成4位权,可排成 個4位权 DATE.

求解第二題

10.一盒中有10個球,球上分別印有號碼1,2,3,4, ****** 10,試求: (1)由盒中一次取4球,則4球之號碼中第二小數目是5的情形有幾種?(5分) ②由盒中一次取4球,則4球之號碼恰2個連續自然數的情形有幾種? (1) 如:(1,2,4,7),(3,5,7,8),(2,5,6,9)(5分) -5 4x C2 = 40 (2) 12345678910 (1.2)、(9.10): other C2x2=42 C₁₂ x7 = 105 9組 42+105-2組連2 = 147-C2

求解！謝謝

15 AJ W THE b 空間中三向量石、石、ㄛ滿足x=(3,-15),ūxc=(1.3),且d=216,求向量 a(兩解)。 中間空