Mathematics, 01.07.2021 08:20 elenasoaita
Cho tam giác ABC có trực tâm H. Gọi M, N theo thứ tự là trung điểm của BC, AC. Gọi O là giao điểm các đường trung trực của tam giác ABC.
a) Chứng minh rằng AOMN co AHAB và tìm tỉ số đồng dạng b) So sánh các độ dài AH và OM.
c) Gọi G là trọng tâm của tam giác ABC. Chứng minh rằng AHAG có AOMG. d) Chứng minh rằng ba điểm H, G, O thẳng hàng và GH = 2GO.
Answers: 3
Mathematics, 21.06.2019 17:00
Igor stravinsky tires sells approximately 3,760,000 car tires and 1,200,000 truck tires each year. about 47,000,000 care tires and 26,000,00 truck tires are sold each year in the united states. what is stravinsky's market share in each of these two markets (cars and trucks)?
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Mathematics, 21.06.2019 17:40
An apartment has a replacement cost of $950,000 and contents valued at $1,450,000. it has a classification of a and a territory rating of 3. find the annual premium a) $10,185 b) $9,230 c) $3,155 d) $13,830
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Mathematics, 21.06.2019 20:30
Tom is the deli manager at a grocery store. he needs to schedule employee to staff the deli department for no more that 260 person-hours per week. tom has one part-time employee who works 20 person-hours per week. each full-time employee works 40 person-hours per week. write and inequality to determine n, the number of full-time employees tom may schedule, so that his employees work on more than 260 person-hours per week. graph the solution set to this inequality.
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Mathematics, 21.06.2019 20:50
There are three bags: a (contains 2 white and 4 red balls), b (8 white, 4 red) and c (1 white 3 red). you select one ball at random from each bag, observe that exactly two are white, but forget which ball came from which bag. what is the probability that you selected a white ball from bag a?
Answers: 1
Cho tam giác ABC có trực tâm H. Gọi M, N theo thứ tự là trung điểm của BC, AC. Gọi O là giao điểm cá...
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