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billgatestuonglai
2 năm trước
Một thửa một thửa ruộng hình chữ nhật, nếu tăng chiều dài thêm 2 m, chiều rộng thêm 3 m thì diện tích tăng thêm 100m vuông. Nếu giảm cả chiều dài và chiều rộng đi 2m thì diện tích giảm đi 68m vuông. Tính diện tích thưả ruộng.
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Các câu hỏi liên quan

1. Nga (brush)___________ her teeth after dinners. 2. We (have)____________ Geography every Wednesday? 3. Nga and Lan (go)___________ to school six days a week. 4. Who (to be)____________ phoning you at the moment? 5. You (hear) ___________the wind? It (blow)____________ very strongly tonight. 6. What your son usually (have)______________for breakfast? 7. Nga (have)___________an English test in two days. 9. Yen (stand)_________ at the corner. She (wait) --------------- for the bus. 10. Summer vacation (come) ____________ soon. What (be) _____________your plan? III. Give the correct form of the verbs in brackets: 1. There (be).................. thirty-nine students in my class. 2. What you (do)............... now? I (read)................. an English book. 3. He (play).................... soccer with his freinds after school? 4. How often Mai (go)...................... fishing? 5. They (not be)................. teachers in my school. 6. Mai (not do)............... her homework after school. 7. How long you (stay)...................... in Hue? For a week. 8. When she (have).................... English? 9. They (wait).................... for a train at the moment. 10. Look! the snow (fall)................ 11. We (be).............. tired and we would like some drinks. 12. Lan (have).................. an oval face and a small nose. 13. Look! The boys (play)....................... soccer now. 14. Where (be)................. Xuan and Mai? They (cook)................. in the kitchen at the moment. 15. Hoa (not like)............... meat. She (like)................... fish. 16. Why don't we (visit)...................the museun? 17. They often (jog)........................in the summer. 18. He (not want)...............................a hot drink. 19. Mr Quang (drive)...........................now.

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