求解🙏🏻謝謝

4. 有一函數y=(a+2)x+b-5,則: (1)若函數y的圖形通過原點,則b= 5 (2) 若函數y為常數函數,則a= (3)若函數y為一次函數,則a的限制為

請問20、22、27、28題的解法？感恩🥹

金鹿 A & C D& B 20. 直角三角形A、B、C中,c為斜邊長,a、b為兩股長,a、b、c均為正整數,則 下列敘述何者正確? (A)a²是(c-b)的倍數 (B)(a+b)是c的倍數 b (C)c²是(a+b)的倍數 (D)(a+c)是b的倍數 力 舟 22. 在甲、乙兩個筒內各放入3個球,並將球分別標上1、2、3與2、3、4。假設兩 筒中每個球被取出的機會均等。若小明自甲筒取出一球,小華自乙筒取出一球,則 小明取出的球其號碼小於小華的機率是多少? (A)(B), (C); (D); -8x+4+9x+6 -4(2x-1)+3(3x+2) x+10 12 12 23. 化簡−2> 2x-13x+2 + = ? 3 4 (A)x+2 (B)x+10 (C) x+2 x+10 (D) 12 12 24. 正整數甲、乙、丙、丁為連續4個3的倍數,例如:3、6、9、12為連續4個3 的倍數,已知甲數最小、乙數為x,則甲+乙+丙+丁之總和為多少? (A) 4x (B) 4x + 6 (C) 4x + 12 (D) 13 - x 4x+6 25. 2x+my = 4. 若二元一次聯立方程式{ x = 2y 則zzz值不可能為下列哪一個數? 的解為x=a、y=b,其中a、b均為正數. 4y+my=4 (A)3 (B) 0 (C) - 2 (D) - 5 (4+m)y=4 26. 請觀察下列的解題過程,找出從哪一個步驟開始發生錯誤? x12 _4x+64≤3x 5-2-(x-1)≤2 (甲) 60-4(x-1)≤3x (乙) 60−4x+4≤3x, (丙) -4x-3x≥64 . ⇒ -7x ≥ 64 . (J) x≤67 64 。 7 (A)甲 (B)乙(C)丙 (D) 丁 36 27.慧喬投擲一顆均勻的骰子兩次,一次出現偶數點,另一次出現3的倍數的機率為 何? BA (A) 2 (B) ¼ 5 (D) 11 √ 36 28. 若方程式x²+2x-11=0,則(x+1)2之值為何? (A) 10 (B) 12 (C) - 10 (D) - 12 410 下列何者錯誤?

求教學

my 以四捨五入法取到整數位) 繁瑣的數 可利用計 輔助喔! (1)每上升100公尺,氣溫下降0.6度, 所以每上升1公尺,氣溫下降0.006度, 由題意可列式y=28-0.006x,所以,是x的一次函數。 (2)x=3952時,y=280.006x3952=28-23.712=4.288, 所以玉山主峰山頂的溫度約為攝氏4度。 ◆隨堂練習 已知「標準體重(公斤)=[身高(公分)-70]×60%」是世界衛生組 織計算女性標準體重的公式。設某女性的身高為x公分、標準體重 為y公斤,則: (1) 列出 x與y的關係式,並判斷,是否為x的函數。 (2)若小妍的身高為160公分,則他的標準體重是多少公斤?

我想問問第七題和第八 求教🙏🏻謝謝 我有試算第八題出來但我不知道對不對 還有答案要怎麼寫？因爲聽老師說這種答案無固定數

8 ①已知跎道一圈為420公尺,若VG:Va:v=63:45:35,且三人 繞行一圈共計21分鐘,则乙的速率為 2Z 3 xyz±0, xy: 2x: yε= 2:4:7, b₁| 3 ²² = 3 x = x4·47=

求解🙏 有點看不懂D點的求法 謝謝

如右圖,在坐標平面上,A(x,y)、B(x2,ye)均在第一象限內 y ,若C、D在AB上,且C為AB中點,AD:BD=m:n,則C點坐 9 標為(* ㄜ, Yiㄜ)、D點坐標為(n+x= ny1 + my2 , 2 2 m+n 終點公式 )。 C D A· B -X

這兩題，求解

AMY 單元 7 函數及其圖形 85 7. 已知有一個二次函數的圖形與ax軸(7,0) x=a,頂點坐標為(b,c),則a+b+c= 、(-1,0),且經過(0, 7),其對稱軸為 ° 8. 已知有一個二次函數y=- 25 =-22 的圖形恰交於一點,且與軸交於 (-3.0)、(2.0),則 二次函數為 5x8= 5X9= 9X 78/11- XX/XXXX 55|9999999

求17.解，感謝

(A) she did 114. My mom wasn't home (A) cooks (B)15. Allen is so friendly, CA (A) must cook dinner yesterday? Jay: No, (B) she cooked dinner (C) she wasn't busy dinner for my brothers. (C) cooking everyone likes him very much. yesterday, so I (B) cook (B) so (C) but his favorite comic books. (B) reads (C) readed )16. Susan watched TV and Jack (A) read DA )17. A: What (A) happens to Bill? B: I don't know. You can ask him. (B) happen (C) is happening

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(41~43) At some stores, people get stickers or stamps on a card when they spend money there. After they collect enough stickers or stamps, they can get gifts or buy things at low prices. Yesterday after I bought coffee; the clerk stamped on my cellphone. How cool it was! My first time! It looks like a stamp we used in the past, but there are many small dots at the bottom. You touch the screen of your cellphone to tell it what to do, and this is also the way smart stamps work. When people use a smart stamp, they hold the top part of the smart stamp. The small electrical charge from people's hands goes through it to the dots at the bottom. Then, the smart stamp tells your cellphone messages with them. The dots of different stores are in different patterns. no alla lil est sill lo busolos With smart stamps, stores don't have to make stickers or cards, and people don't have to keep those things. Stores can also collect some useful information. For example, how many people come and buy things or what is popular? Are there any other good things about smart stamps? Are there things people need to be careful with when they use them? We can know more after smart stamps become more common. sticker 貼紙 electrical charge 電荷 message訊息 pattern 圖案 ( ) 41 Which picture best shows how electrical charge moves when someone uses a smart stamp? (A) (B) (C) (D) MA ( ) 42 "Are there any other good things... become more common." What did the writer want to say? (A) Not everybody needs to use smart stamps. (B) Many people worry a lot when they use smart stamps. (C) Let's learn more after more people experience using smart stamps. (D) Stamps are not common, so people may think about giving them up. ( ) 43. In the reading, the writer mentioned: a. Why people use smart stamps. b. One new thing in the writer's life. c. How smart stamps work. In what order did the writer mention them? (A) abc. (C) cba. 『著作權,翻印必究 9-15 (B) ba→c. (D) b→ c→a. 三美 mention提及

求解

2. Al f w a plane for the first time yesterday. He finally made his dream come true. 3. A: Let's meet at 7 p.m. Is it c B: Sure, I'm free tonight. 4. The church is a t for you? s from my house. It only takes me five minutes to walk there. 5. Joe has at d baseball cards. He knows a lot of baseball players.

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?会公平舖面問 ) ) 5.右圖為一圓錐的展開圖,被取出一 12 則此圓錐的表面積為何? 14- O (A)133元+50元 (B)143元 1180元 (C) 193元 310 13 (D) 280zOMYDDARYNS