Người ta dùng mặt phẳng nghiêng để dưa một vật nặng lên thùng xe ô tô tải. Muốn giảm độ nghiêng của mặt phẳng nghiêng để giảm độ lớn của lực kéo ta phải làm như thế nào. Giải thích

Tính giá trị biểu thức 1995 × 253 + 8910 : 495

Giúp mình vớiiiiii. T.T Câu 12 í ạ Giúp vớiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiii

Câu 4: Quả phượng được xếp vào nhóm nào dưới đây ? A. Quả khô không nẻ B. Quả khô nẻ C. Quả mọng D. Quả hạch

V. One of the four underlined parts A, B, C, and D in each sentence contains an error 1. Remember to wash and ironing your own clothes every day. 2 They often go to bed early and never get up lately. 3. To keep fit and stay healthily, you should exercise regularly. 4. It 's getting easier for me to write and I make less mistake. 5. Play football is one of the most common ways of relaxing. 6. John doesn't work so hardly as Peter, but he is much more careful than Peter. 7. Each student studying chemistry has to spend at least three hours per week in the laboratory. 8 . The most problematical of the four major language skills p are probably that of writing. 9. She wants to go to Ho Chi Minh City to begin her career like a singer. 10. Please arrive early so that we can start the meeting at time. 11. Do you know how much does it cost to fly to Australia? 12. My niece can read by the time she was four years old. 13. Most ants could lift objects that are ten times heavier than their own bodies. 14. Tom won 't be able working in the shed because he is ill. 15. Bob was in an accident, but he won 't be able to remember how he had hurt himself 16 . If you don 't study your mathematics, you can' t be able to do the exerciss.

giúp mình bài 5 và bài 9 với nhé mình sẽ vote cho những ai làm bài 5*

When we feel anxious, we often give ourselves negative messages like that: “I can’t do this”, “I’m useless”, and “I’m going to fail”. It can be difficult but (29)______ to replace these with positive thoughts such as: “this is just anxiety, it can’t harm me”, and “relax, concentrate- it’s going to be okay”. Picturing how you’d like things to go can help you feel more (30)_____. Try to imagine yourself (31)_______ up to an exam feeling confident and relaxed. You turn over your paper, write down what you do know and come away knowing you tried your best on the day. It can sometimes appear that your whole future depends on what grades you get. There can be a lot of pressure (32)________young people to do well in exams which can cause a lot of stress and anxiety. Remember that exams are important, but they are not the only way to a successful future. Lots of people achieve success in life without doing well at school. 29 A:try B:allow C:let D:afford 30 A:stressed B:tense C:negative D:positive 31 A:to turn B:turning C:turn D:turned 32 A:of B:about C:for D:on

Cho ∆ABC ( AB < AC ), có AI là đường phân giác a/ Cho AB = 16cm, AC = 24cm, IB = 12cm. Tính IC ? b/ Vẽ IH // AB ( H thuộc AC ), IK // AC ( K thuộc AB). c/Chứng minh : BK/AB + CH/AC = 1 (không làm được câu C cũng không sao ,còn làm được thì càng tốt á:<)

Giúp mình bài này với khó quá ai giúp dc hứa vote 5*

các bạn có thể giúp mình làm bài này được không?mình cảm ơn.