Đáp án:
Giải thích các bước giải:
$\text{DT hình chữ nhật : CD x CR}$
$\text{Chu vi hình chữ nhật : (CD + CR) x 2}$
$\text{DT hình vuông : Cạnh x cạnh}$
$\text{Chu vi hình vuông : Cạnh x 4}$
$\text{DT hình tam giác : Đáy x chiều cao : 2}$
S hình chữ nhật = D x R
Chu vi hình chữ nhật = ( D + R ) x 2
`S` hình vuông = Cạnh x Cạnh
Chu vi hình vuông = Cạnh x 4
`S` hình tam giác = Đáy x chiều cao : 2. ( S = $\frac{a.h}{2}$ )
Sao hnay hoidap đông vui thế, ko còn slot luôn @@. Vẽ thỏ bảy màu. NL: sắp thi cấp 3 r, có ai cho tui 1 lời chúc ko ^^
giúp mk bài hình nha nha nha ko cần vẽ cx đc :)
√(1-3)^2 √(2-√3)^2 √(2-√3)^2+√4-2√3 √(3-√11)^2+2√(√11+2)^2 √(3√5-4√2)(3√5+4√2) √10+2√21-√10-√21 √15-6√6+√33-12√6 √4-√15-√4+√15 √6-2√5+√6+2√5
EXERCISE 3: 1.When you travel into space, you can eat and drink in ______. (WEIGHT) 2.How do you ________ the real painting from the fake one ? (DIFFERENT) 3. He __________and fell into the water. (BALANCE) 4.All the ________from the last lecture were not allowed to attend (ABSENCE) the interview for the coming project. 5.Ann _______ and picked up her riding hat. (MOUNT) 6. Jim is very disorganized and not very ________ . (BUSINESS) 7. You look rather _______ . Are you worried about something? (OCCUPY) 8.He was the only student to be awarded the special prize in reciting poetry_______ (Compete) 9.He is_______ to have completed all his coursework by next week. (Plan) 10.If you felt _______ ,you should have given me a ring(lone)
Phương trình -x^2+2|x|+2-m=0 có bốn nghiệm phân biệt khi m thuộc?
Cho (O) kẻ 2 tiếp tuyến AB,AC (A nằm ngoài(O). Một đường thẳng d đi qua A cắt(O) tại 2 điểm E,F sao cho AE<AF và đường thẳng d ko đi qua O. Gọi H là giao điểm của AO và BC Cmr a, tg ABOC nội tiếp , AH.AC=AE.AF b, Gọi K là giao điểm BC và EF . cm $\frac{AK}{AE}$+$\frac{AK}{AF}$=2 Chỉ làm phần b thôi nhé .Hứa sẽ vote5s ctrhn
EXERCISE 1: Give the correct form of the words in brackets to complete the following sentences. (25 points) 1. I am ____________to peanuts so I have to be very careful what I eat. ALLERGY 2. In particular, parents are afraid of changes in their children’s _______ PERSON 3. These clothes are attractive but entirely ________ . PRACTICE 4. Al is a manager at the local water ___________ . WORK 5. I was really impressed by the __________levels of all the athletes . FIT 6.The boy was very violent and his parents found him ________ . MANAGE 7. Jim is one of the most ________ members of the committee. SPEAK 8.You can’t enjoy the ___________ effects without going under the knife, can you? BENEFIT 9.We couldn’t have built this new train without the _________and expertise of the entire workforce DEDICATE 10. All the heavy ___________in the factory has been manufactured on the site MACHINE
1. Her success went beyond her expectation. Never..................... 2. Tony is very charming, but I wouldn't trust him. Charming..................... 3. I left without saying goodbye as I didn't want to disturb the meeting. Rather than..................... 4. If there is an emergency, ring this number. In case..................... 5. The theft must have come in through the window. The theft almost..................... 6. Driving at that speeds is dangerous although you are an experienced driver or not. However..................... 7. Its lack of irregular verbs makes Esperanto to a unique language. Unlike..................... 8. You won't find a more dedicated worker anywhere than Mrs. Jones. Nowhere..................... 9. The play is so popular that the theatre is likely to be full every night. Such is..................... 10. Experts think that all dogs evolved from wolves. All dogs.....................
Mọi người giúp em nha, em đg cần gấp ạ
Homeopathy (feels / suggests / seems / shows)1 _____ to have gained a lot more respectability in society than a number of GPs believe it really deserves. (Except / Although / However / Despite)2 _____ there being no evidence that it is effective, according to a recent UK government report, many prominent people (maintain / keep / carry / continue)3 _____ to support it. In view of this, perhaps the most surprising fact of all is that homeopathy is offered (as / from / on / to)4 _____ treatment on the NHS National Health Service} in the UK. Like many other alternative forms of medicine, homeopathy has become so accepted (until / that / enough / when)5 _____ there are few who question its use. People have become (accustomed / familiar / acquainted / fond)6 _____ to seeing homeopathy as a treatment for illness and disease. However, many researchers insist (for / on / by / in)7 _____ claiming that it is not a valid treatment because the medicines contain no active ingredients. The real question is why it is so popular. Many patients swear that it was an effective cure (off / by / for / in) 8 _____ their disease whilst the report maintains this is simply (due / up / result / because)9 _____ to the placebo effect. In other words, just the act of taking the medicine is a good enough reason for patients to (have / start / get / become)10 _____ feeling better. In short, while homeopathy may be useful for helping people get over minor illnesses, it is (regarded / referred / recovered / recommended)11 _____ that anyone with serious illnesses should seek out conventional treatment.
Loga.vn - Cộng Đồng Luyện Thi Trực Tuyến