Cho hình chóp sabcd có đáy abcd là hình thang vuông tại a và d, ab=ad=a, cd=2a, sd vuông với abcd, sd=a. Tính khoảng cách từ d đến sbc

Giúp mình nhé đang cần okkok

I. Choose the word in each line that has different stress pattern. 1.A. ecology B. environment C. autography D. residential 2. A. physiography B. alternatively C. criminology D. unsuccessfully 3. A. temporary B. geology C. emergency D. logography 4. A. astrology B. unnatural C. medication D. demography 5. A. voluntary B. apology C. television D. nationalize II. Complete each sentence with the correct word from the box. drought flood hurricane landslide tornado 1.When there is a _____________, a lot of water covers an area where the usually isn’t water. 2. A______________ refers to a long time without rain. 3. When there is _____________, a lot of rocks and earth fall down a hill. 4. A __________________ is a storm with a lot of wind that moves over water. 5. A__________________ is a storm in which the air moves very quickly in a circle.

Giải phuong trình sau (3x-1)(x+3)=(2-x)(5-3x) giúp mik

Câm chép báo mod đấy Viết 1 đoạn văn từ 5 đến 7 câu miêu tả thầy Ha men trong buổi hc cuối cùng

1. The man __________ in the accident was taken to the hospital. A. was injured B. injures C. injured D. injuring 2. This Temple was built 100 years ago to __________ a Hindu God. A. present B. explain C. express D. honor 3. Viet Nam is __________ country. A. an exporting-rubber B. a rubber-exported C. a rubber-exporting D. an exported-rubber 4. Are you free to __________ for dinner this evening? A. come across B. come over C. go over D. go across 5. While we __________ to school, we __________ an accident. A. were walking / saw B. walking / seeing C. were walking/ were seeing D. walked/ were seeing 6. Compose is a wonderful natural __________. It helps plants grow. A. sandal B. fertilizer C. glassware D. metal 7. This book __________ to the library today. A. has to return B. has to been returned C. has to be returned D. has is returned 8. Mai is talking about her __________ for Tet holiday. A. prepare B. prepared C. preparing D. preparation 9. Angkor Watt should really be known __________ a wonder of the world. A. like B. so C. as 10. Simon __________ in class for 3 days. D. alive A. isn't B. won't be C. wasn't 11. These beautiful pictures __________ from recycle paper, D. hasn't been A. made B. make C. are made 12. Jane said she __________ in the contest. D. is made A. can participate B. would participate C. will participate D. is participating

qua việc quy định của nhà nước ta về quyền tự do kinh doanh và tác của thuế , mỗi chung ta là 1 công nhân phải có trách nhiệm như thế nào ?

Giúp vs 60đ ạ và mk đặt câu hỏi lần 2 rôi, một giúp đỡ

Mọi người ơi làm giúp em hứa vote 5* cứ làm đi ạ

x-2 phan x+1=5phan 6 tim x giúp vs cho 5*