8x-3 = 5x +12 giải phương trình

Give the correct form of the verbs: 1. If your sister (be)______late, we will wait for her . 2. Tomorrow, we will go on a picnic if it (not rain)_____________________. 3.Tom (visit)______ _____ Ha Long Bay yesterday . They (ever see)________________ this film twice

Choose the best answer A, B, C or D to complete the sentence. Question 7. Niagara Falls is a great _________ on the border of the USA and Canada. Thousands of visitors come to see it every month. A: culture B: relaxation C: spectacle D: tradition giải thích

E cần gấp câu 3 ạ!! E cảm ơn mn

Người ta muốn lát nền một căn phòng hình chữ nhật có chu vi 32 m, chiều rộng bằng 1/3 chiều dài , bằng những viên gạch vuông có chu vi là 8 dm . Tính số gạch cần dùng

My daughter, Jane, never dreamed of receiving a letter from a girl of her own age in Holland. Last year, we traveling across the Channel and Jane put a piece of paper with her name and address on it into a bottle. She threw the bottle into the sea. She never thought of it again, but ten months later, she received a letter from a girl in Holland. Both girls write to each other regularly now. However, they have decided to use the post office. Letters will cost a little more, but they will certainly travel faster. 36. Jane never dreamed…………… a letter. A. to receive B. to receiving C. of receive D. that she would receive 37. She received a letter from a girl of her own age. The girl is ………….she is. A. the same age with B. the same age C. as old D. the same age as 38. She never thought………… it again. A. for B. to C. at D. about 39. The girls write ……………… regularly now. A. to one another B. the one to the other C. each to other D. to other 40. Jane wrote her name and address on a …………… of paper. A. lump B. bar C. tube D. sheet

cấu tạo nguyên tử, Tính chất hóa học đặc trưng ,So sánh tính chất với các nguyên tố lân cận với nguyên tố có -số hiệu nguyên tử 15, Chu kì 3, nhóm V - số hiệu nguyên tử 20 ,chu kì 4, nhóm II

tính x ^2 + x +m-2 =0 khi m bằng 0

Giúp mk câu 42 với.Mk đang cần gấp

giải hệ phương trình giúp mình với ạ