chứng minh biểu thức F = 3x^2+12x+40>0 với mọi x ( MN GIÚP VS HỨA VOTE 5 SAO )

Giúp em gấp 2 bài này với ạ!! Cảm ơn 😊

Số khách du lịch quốc tế đến nước ta trong quý 1 và quý 2 của năm 2019 là 6526.300 và 3514.500 người. Để hoàn thành kế hoạch cả năm đón 22 triệu đồng thì 2 quý cuối năm đó ngành du lịch đón thêm bao nhiêu người nữa

Vẽ mầm ikkkkkkkkkkkkkkkkkkkkkkkkkkkkkk mn ơi mầm đẹp zai tí heheehehe nl cấm ns từ chậm ô kê

Tính giá trị biểu thức sau : 12: {390 :[500-(125+35.7)] *lưu ý : dấu . là dấu nhân , chú ý cách thực hiện phép tính có trong ngoặc

Chọn câu trả lời đúng nhất: 1. Choose the best relative pronoun to fill in the blank: “The top students, …………… graduated with honors, received scholarships.” A.which B.all of whom C.all of which D.some of which 2. Which of the following sentences appears in an email of inquiry? A.I am writing to complain about my recent trip to Malaysia. B.I’m writing this email to ask you about some information related to the special offer for the summer vacation. C.I have a couple of complaints about my trip to Malaysia last vacation. D.We held a meeting on 21 January to discuss possible solutions. 3. Choose the most suitable sentence to tell someone how to avoid a common mistake. A.Don’t forget to turn off the oven when you leave. B.Not forget to turn off the oven when you leave. C.Forget to turn off the oven when you leave. D.Not to forget turn off the oven when you leave. 4. Choose the best answer to complete the following sentence: “I don’t know ……. she likes me or hates me.” A.who B.what C.which D.whether 5. Fill in the blank with suitable word(s) for the sentence of acknowledging. “Thank you for your email dated November 17 _______ about the unhelpful store clerk in our store in the Marina Store shopping mall.” A.complain B.complaining C.saying D.sending 6. Choose the correct relative pronoun to fill in the blank: “I had to meet with my neighbor, ......... dog I have been watching.” A.which B.whose C.who D.whom 7. In an opinion essay, …………. is a sentence that expresses the main idea of the essay. A.thesis statement B.topic sentence C.general statement D.supporting sentence 8. Anna needed some money, ______ she took a part-time job. A.or B.so C.but D.and 9. The first paragraph in an opinion essay is the …………... A.conclude B.introduction C.body D.conclusion

Bau Truc pottery village of Cham ethnic minority is one of the oldest pottery villages in Southeast Asia. lt is located about 10 kilometres in the South of Phan Rang town. The small village is (26) _____ to more than 400 families, (27)_____ 85% are in the traditional pottery business. The style is said to be handed (28) ____from Po Klong Chan, one of their ancestors from the immemorial time. People in Bau Truc use their skillful hands bamboo-made circles and shells to create priceless works. It is (29) ______ that while the Kinh people have switched to using wheel as an indispensable (30) ______ , the Cham counterparts, on the contrary, still (31) ______ talent hands and simple tools. To create a pottery product, a Cham craftsman only needs an anvil, not a potter`s wheel, and other simple equipment and moulds and then uses hands to (32) ______ pieces of clay into the works he wants. The clay is taken from the banks of the Quao River and is very flexible, durable when (33) ______ . The skills needed to mix sand with the clay are also various. The amount of sand mixed with the plastic material is dependent on what the pottery used for and the sizes. For these reasons, Bau Truc pottery is quite different from pottery elsewhere. For example, water Jars made in Bau Truc are always favoured by people in dry and sunny areas (34) _____ the temperature of the water in the jars is always one centigrade cooler than (35)______ outside.

giúp e vssssssssssssssssssssssssssssssssssssssss

-x ²+10x-25 phân tích các đa thức sau thành nhân tử dùng hđt

Lượng hơi nước tối đa mà không khí chứa được khi ở nhiệt độ 20 độ C là Bao nhiêu