วิชา PRE380

2. A chemical company is considering options for eliminating harmless chemical sludge from the following 2 options. (1) Prepare the site for landfilling in the factory. This option requires the initial investment for purchasing the essential equipment 130,000 Baht. Each year there will also be a cost of landfill operation 95,000 baht per year. At the end of its service life of 3 years, the equipment used within the landfill site will have a salvage value of 20,000 baht. (2) Hire a chemical sludge removal contractor to remove sludge. The contract term must be 6 years. The cost of contract to be paid to the contractor are 110,000 Baht a year in year 1-2; 115,000 Baht in year 3; 120,000 Baht in year 4; 125,000 Baht in year 5; and 130,000 Baht in year 6. a) (13 marks) If the company finances the money for this project by borrowing from a bank in which the bank charges interest on loans at the rate of 3.86% per 6 months, compounded every month. Which option should this chemical company choose? b) (5 marks) The company executives believe that the option of establishing a landfilling site within the factory seems to be a more sustainable alternative for the company. If the selection in question a) above did not select the landfilling site option, please suggest how much the initial investment for purchasing the equipment should cost so that the landfill option would be selected (assume the same salvage value of the equipment)?

ต้องการแก้โจทย์แบบเข้าใจ

3. upbringing 5. participate in 10. His findings were interesting but they weren't exactly conclusions. 1. awe-inspiring 3. bad- tempered 5. handmade 1. to watching 3. watching 5. being watch 12. A: Your hair needs Part 2: Grammar (Items 11 - 25) Directions: Choose the best grammatical answer. 11. A: Won't you stay? There is a good Japanese film on TV. B: No thanks, I hate Japanese films. B: Yes, I'm getting it 1. to be cut / cut 3. be cut / cutting 5. being /cut 13. A: I've got a headache. Shall I take an aspirin? B: Well, you can try 1. to be taken 3. taking 5. being take 14. A: Did they play that song on the radio? B: Well, I heard it 1. play 3. to be played 5. being play 15. You must regret 1. tell 3. told 5. being tell doesn't it? this weekend. 16.1 tried them. 1. to be stopped 3. stopping 5. to stop 4. elaborate on 2. easygoing 4. groundbreaking 2. watch 4. having watched 2. cutting / to be c 4. cutting / be cut an aspirin if you like. 2. to take 4. taken on the radio this morning 2. played 4. playing your sister about her husband now. 2. telling 4. to be told the thieves but they were both on motorbikes 2. being stop 4. stopped

help me

Part One: Expressions (Items 1-15) Choose the best answer. 1. A: Could I use your phone for a moment? B: Help yourself. 1. Never mind it bund 3. By all means 2. 3. 4. 5-8 1. Hang out 3. Hold on A: I think I have an appointment with Mr. Johnson at 3 p.m. today. Is that right? please. Let me check the timetable first. Yes, that's right. 2. Hold up- B: 4. Hang up 1. How long does it take 3. How do you do it Test 2 A: That salad was delicious. B: Oh, it's very easy. Do you want to write it down? A: Yes, I will. 2. Not at all 4. That's alright Lucy: You look tired. Paul: Lucy: Paul: A: I heard that there's a big sale this weekend. Do you want to go shopping? B: I'm broke. A: Well, we can still do some window shopping, can't we? 1. I don't feel like it 2. I don't like it 3. I feel bad 4. I don't care 2. How is it 4. How do you make it _5_________ last night? No. I had a bunch of my friends over and we partied until the wee hours. 6! I guess I just can't take late nights like I used to. My head is spinning and I have a migraine. แนวข้อสอบ GAT ภาษาอังกฤษ

ใครได้ข้อไหนช่วยผมหน่อยครับ😭😭

1, You like sports Td like to read. A. whenB. whileC. butD. yet 2. we were singing, the teacher came in. A. BeforeB. afterC. AsD. Until 3. I Was about to leave my house, the phone rang. A. whileB. whenC. asD. ofter 4. They did not stop fighting there was no enemy left. A. untilB. ofterC. whenD. since 5, Thave not seen him he went to college. A. when B. beforeC. asD. since 6, It is five days we came here. A. whenB. beforeC. asD. since 7, It wos not long _he got to know it. A. whenB. beforeC. afterD. นntil 8. We shall go, A. wheneverB. whateverC. whereverD. however _we are free. 9. | live, Imust serve the people heart and Soul. A. WhenB. So long asC. As soon asD. On condition 10, I Was reading anovel _he was watching TV. A. whenB. whileC. beforeD. as 11, Put the medicine Lyou can easily get it. A. So that B. whereC. whichD. there 12. We will go the Party wonts us to go. A. whereverB. thereC. to the placeD. which there is awill there is o Way. 13, A. WhenB. WhereC. WhetherD. How 14, I am going _you went last week. A. whereB. whereverC. whenD. the place 15, Lyou go , you should bear the motherland in your mind. A. WhereB. Wherever C. WhateverD. However 16, weather permits, we'll have an outing. A. For B. ThoughC. WhileD. If 17, You won't succeed harder. A. unless you will workB. นnless you work C. unless you don't workD. if you won't work 18, I wonder if he us, and I think if he us well be able to complete the ta sk ahead of time. A. helps, helpsB. will help, helps C. helps, will helpD. will help, will help

ช่วยทีคะ

AIS-T|AIS VolTE ป8 [90) 08:34 แบบฝึกหัด 4.2 ก worksheet : www.liveworksheets.com ชื่อ - สกุล. ชั้น เลขที่ แบบฝึกหัดที่ 4.2 ก ให้นักเรียนเติมคำตอบที่ถูกต้องลงในช่อว่าง 1. จงเขียนจำนวนผลลัพธ์ทั้งหมดที่อาจจะเกิดขึ้นได้จากการทดลองสุ่มต่อไปนี้ 1) สุ่มสอบถามเพศของบุตรทุกคนจากครอบครัวที่มีบุตs 2 คน ตอบ - 2) สุ่มหยิบข้าวเหนียวปิ้ง 2 ห่อพร้อมกัน จากตะกร้าที่มีข้าวเหนียวปิ้ง 4 ห่อ คือ ไส้เผือก ไส้มะพร้าว ใส่ถั่ว และไส้กล้วย ตอบ e 3) สุ่มจัดคู่แข่งขันฟุตบอลเยาวชน 1 คู่ 1 นัด เมื่อมีทีมสมัครเข้าแข่งขัน 5 ทีม คือ กระทิง เสือดาว หมูป่า โลมา และบ้าย ตอบ 2. โยนเหรียญบาท 1 เหรียญ 4 ครั้ง 1) จงหาจำนวนผลลัพธ์ทั้งหมดที่อาจจะเกิดขึ้นได้ ตอบ 2) จงหาจำนวนผลลัพธ์ของเหตุการณ์ที่เหรียญออกก้อย 1 ครั้ง ตอบ 3) จงหาจำนวนผลลัพธ์ของเหตุการณ์ที่เหรียญออกหัวน้อยกว่าออกก้อย ตอบ 4) จงหาจำนวนผลลัพธ์ของเหตุการณ์ที่เหรียญออกก้อยมากกว่า 2 ครั้ง ตอบ 5) จงหาจำนวนผลลัพธ์ของเหตุการณ์ที่เหรียญออกหัวและออกก้อยมีจำนวนครั้งเท่ากัน ตอบ อLIVEWORK: Finish!

ช่วยทีงับบ ไม่เข้าใจเลยยยย🥺🥺

Put in the correct question tags. 1. She was sad, ? 2. The teachers are having a meeting, ? 3. We havent seen this film, ? 4. Steve hasn't been to Las Vegas, ? 5. Lunch is at noon, ? 6. She should take a medicine, ? 7. Bruce knows Janet, 8. It wont be difficult, ? 9. You ate my hamburger, ? 10. My boss doesnt like you, ? 11. Cats don't have dreams, ? 12. We shouldnt fight with each other, ?

ช่วยทีงับบ ไม่เข้าใจเลยยยย🥺🥺

Put in the correct question tags. 1. She was sad, ? 2. The teachers are having a meeting, ? 3. We havent seen this film, ? 4. Steve hasn't been to Las Vegas, ? 5. Lunch is at noon, ? 6. She should take a medicine, ? 7. Bruce knows Janet, 8. It wont be difficult, ? 9. You ate my hamburger, ? 10. My boss doesnt like you, ? 11. Cats don't have dreams, ? 12. We shouldnt fight with each other, ?

ทำไงค้าบบ

B) INTER-RAIL EUROPE FROM BRITISH RAIL INTERNATIONAL The new Inter-Rail 26+ Pass offered by British Rail International is for people who would like to mix Some of the popular attractions of Europe with some of the more นทนรual experiences that can happen when you get off the tourist route. Whatever your tastes, and wherever you want to go, people of every age from 26 to 106 (and over!) will enjoy the freedom to travel as they please at astonishingly good value prices - a fifteen-day pass costs E209 and a one month pasS Costs just E269. Both give you unlimited second-class rail travel in the nineteen European countries listed at the end of this leaflet. Those countries which are not listed do not recognize Inter-Rail 26+, Planning your trip You can get brochures, maps and accommodation guides from the National Tourist Offices for each country you plan to visit. Some of the addresses are listed in this leaflet but we leave all that to you! However, the International Rail Centre at Victoria Station, London SWIV 1JY, offers a special journey-planning service. A route can be prepared, complete with any train reservations that you need, for a minimum fee of around f15, depending on the amount of work involved. Write to the above address, giving as much detail as possible about your dates of travel and preferred departure times. What else do you need to know? Reservations are required for certain trains in Europe and an extra charge is payable on some express trains. It is usually possible, however, to find an alternative local or regional service. How to book? Inter-Rail 26+passes are available from certain British Rail stations and travel agents approved by British Rail International. For further enquiries, please call 0171834 2345 or write (or call in at) the International Rail Centre, Victoria Station, London SWIV 1JY To qualify for Inter-Rail 26+you must have lived in Europe for at least six months and hold a valid passport - please bring it with you when you book. Under 26? Inter-Rail is available to under 26s for one month's unlimited travel in 26 countries at a cost of f249 - less than f10 per country. Please ask for a leaflet.

ช่วยทำหน่อยนะคะ🙏

Present เnd R6+ Simple pAssive fen Our lives 1. (make) better everyday thanks to inventionร. But sometimes, inventions can make our lives worse. This can happen when an invention 2. (not use) according to the inventor's plan. For example, Alfred Nobel, a Swedish scientist, invented a strong explosive in 1867. It 3. (call) dynamite, and it revolutionized the world of engineering. After its invention, many bridges, tuทnels, and other structures 4. (build) with the help of dynamite. However, dynamite 5. (also, use) to kill people in wars. This upset Nobel. Before his death, Nobel decided to use the money from his famous invention to make the world a better place. A special fนnd 6. (start) in Nobel's name. Every year, Nobel prizes 7. (give) for extraordinary work in science, medicine, literature and the promotior of world peace.

ขอวิธีการทำและคำตอบค่ะ

HN) Exercises (1)You take 200 milligrams of a headache medicine, and after 4 hours, 120 milligrams remain in your system. If the effects of the medicine wear off when less than 80 milligrams remain, when will you need to take a second dose, assuming the anmount of medicine in your system decays exponentially? 13 ส.ค. The half-life of Radium-226 is 1590 years. If a sample initially contains 200 mg. how many milligrams will remain after 1000 years? )The half-life of Fermium-253 is 3 days. If a sample initially contains 100 mg, how many milligrams will remain after 1 week? บ้อ The half-life of Erbium-165 is 10.4 hours. After 24 hours a sample still contains 2 mg. What was the initial mass of the sample, and how much will remain after another 3 days? The half-life of Nobelium-259 is 58 minutes. After 3 hours a sample still contains10 mg. What was the initial mass of the sample, and how much will remain after another 8 hours? (6) A scientist begins with 250 grams of a radioactive substance. After 225 minutes, the sample has decayed to 32 grams. Find the half-life of this substance. A wooden artifact from an archeological dig contains 60 percent of the carbon-14 that is present in living trees. How long ago was the artifact made? (The half-life of carbon-14 is 5730 years.)