Cho hình thang ABCD , đáy bé AB = 1/3 đáy lớn CD . Nối A với C . Tính diện tích tam giác ADC , biết diện tích hình thang vuông là 20 cm vuông

Mỗi thùng có 6 lít dầu. Hỏi 5 thùng như vậy bao nhiêu lít dầu ?

V. Make future simple question : ( 10 điểm ) 1. ........................................... ( people / live ) on the Moon someday ? 2. What ................................. ( the cars / look ) like in 20 years ? 3. ........................................... ( robots / replace ) humans ? 4. Where .............................. ( you / be ) in 2040 ? 5. When .......................................... ( humans / live ) on other planets ? 6. ..................................................... ( houses / be ) more environmentally friendly in the future ? 7. ..................................................... ( computers / take ) over the world ? 8. How ............................................ ( fashion / change ) ? IX. Complete the sentences with an appropriate preposition : ( 10 điểm ) 1. Cars of the future run .................. electricity. 2. Phong's dream house looks ................... a UFO. 3. We'll live ......................... a hi - tech house ........................... the moon. 4. Robots at home wwill help people ....................... household chores. 5. Will your future house be .......... space ? 6. Will robots take care .................... children ? 7. ....................... the future I will travel to the Moon ....................... super car. 8. We might have flying cars ............................ 2050.

Để thu đc300g dd KOH 20% thì cần bao nhiêu (g) dd KOH 60% x bao nhiêu (g) nước?

cho Δ MNP có góc M bằng 90 độ ,kẻ MI ⊥ NP (I ∈ NP). vẽ MK là phân giác của góc IMP ( K ∈ IP). kẻ KA ⊥ MP( A ∈ MP) a. CM ΔMKA= ΔMKI b. gọi giao điểm AK và MI là B . CM MK ⊥ BP và IA song song BP c. so sánh hai đoạn thẳng KP và BP

Cho m,n là hai số nguyên khác 0 thỏa mãn 4/m-1/n=1.Chứng minh m chia hết n

160. It (rain)…………….when we arrived. 161. Bill said he (forget)……………………to buy a dictionary 162. He felt asleep while he (do)………………his homework. 163. At this time next week, we (live)………………..in USA. 164. John (watch)…………………….TV at 8 last evening. 165. By the end of last March, I (study)……………………….English for 5 years. 166. By next month. I (finish)………………my first novel. 167. By this time next week, he (write)………………..his novel for 6 months. 168. By the time you arrive, I (finish)……………….writing an essay. 169. He might get fat if he (stop)…………………..smoking. 170. If I had seen the movie, I (tell)………………………you about it last night.

140. You may begin when you (be)……………….ready. 141. I see that Henry (write)………………… his composition now. 142. I had done what (be)…………………necessary. 143. They had found that the road (be)…………………………very long. 144. I saw that I (make)……………………..a mistake. 145. We find that we (take)…………………….a wrong way. 146. I want to know how long she (live)………………..here. 147. I didn’t know who (help)……………him. 148. Do you hear what she (just, say)…………………….? 149. They believe that the police (capture)………………the thief soon. 150. Did John say he (call)……………….you again? 151. She has thought that the work (be)………………….easy. 152. She said that she (get)………………married soon. 153. He thinks that it (rain)………………….tonight. 154. The students had thought that the English test (be)……………….rather difficult. 155. I wonder what changes the new president (introduce)…………………… 156. Please be quiet! I (work)………………… 157. When I (be) ………………..a child, I (want)……………..to be a doctor 158. Up to now, the teacher (give)……………………. our class 5 tests 159. I (not send)……………..the parcel until I hear from you.

Cho tam giác ABC, M là trung điểm BC. N thuộc cạnh AC sao cho AN=1/3AC. BN giao AM tại I. a, CMR I là trung điểm AM. B, Tính BI/IN Dùng Menelaus và Ceva nha nhé mọi người! GIÚP EM VỚI!!!

1. this / others / best / to / problem / are / the / there / is / solution / although / the / , 2. colors / me / beautiful / are / my / pencils / different / bought / whose / mother / some Giúp mình sắp xếp 2 câu này với ạ.