Điền dấu < vào ô trống ( Dấu bé hơn )
GT : Vì các phân số ở vế bên trái có cùng tử khác mẫu
Muốn cộng các phân số cùng tử ta quy đồng mẫu số chung rồi cộng như thường
=> Tổng các số đó < $\frac{9}{20}$
@yin
#$Victory^{}$
Đáp án: Dấu<
Giải thích các bước giải:
Muốn cộng các phân số cùng tử số ta quy đồng (MSC) rồi cộng như thường.
Chúc bn học tốt!!!
Nocopy#
Cho hàm số y = (2m-1)x + m (m là tham số) (d). Gọi A, B là giao điểm của đường thẳng (d) với hai trục toạ độ Ox, Oy (A, B đều khác O). Tính độ dài đường cao OH của tam giác OAB. b. Tìm m để đường thẳng (d) tiếp xúc với đường tròn tâm 0 (O là gốc toạ độ), bán kính R = -E Giúp e 4b ạ.
3.Try to ________________________the amount of fat in your diet. (25 Điểm) reuse refill reduce 4.You’ll get back your ____________ when you bring the cans back for recycling. (25 Điểm) account deposit payment 5.When people___________________________ paper, they put it into use again. (25 Điểm) reuse reduce recycle 6.Some people refuse to buy goods that are__________________________ because they fell that it is harmful to the environment. (25 Điểm) overheated overpackaged overpaid 7.The earth takes ________________________________365 days to go round the sun. (25 Điểm) approximately pleasantly immediately 8.The next train to the airport ___________________ from platform 2. (25 Điểm) imports departs reduces 9.Break the chocolate__________________________into squares. (25 Điểm) off on up 10._______________is a mixture of decaying plants and vegetables that is added to soil to improve its quality. (25 Điểm) Dung Compost Trash 11.I threw ____________________________all the broken toys. (25 Điểm) away aside down 12.The price includes travel and _________________________ but meals are extra. (25 Điểm) house accommodation apartment 13.There are some ____________________living in remote areas of the Amazonian rain forest. (25 Điểm) streams houses tribes 14.Is Thanh Long fruit in Vietnam ___________________ to The United States every year? (25 Điểm) imported exported sold 15.Would you mind if I turned off the lights ? . (25 Điểm) Of course Fine, thanks Go ahead 16.Are these sweets ________________________from New Zealand? (25 Điểm) import imported imports 17.The pizza __________________to my house this morning was very delicious. (25 Điểm) brought was brought is brought 18.In 1876, the telephone _______________________first introduced by Bell and Watson. (25 Điểm) is was has been 19.The project ___________________________to the public when it is finished. (25 Điểm) will show will showed will be shown 20.The man_______________________me with this luggage is my friend's uncle. (25 Điểm) helping is helping helped 21.We were delighted ____________________your letter yesterday. (25 Điểm) got to get getting 22
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