Cho tam giác ABC vuông tại A, có BD là phân giác của . Trên cạnh BC lấy điểm M sao cho BA = BM. a. Tính độ dài đoạn BC. Biết AB = 6cm, AC = 8cm. b. Chứng minh \Delta ABD = \Delta DMB. Từ đó suy ra MD \bot BC c. Đường thẳng MD cắt AB tại F. Gọi H là trung điểm của FC. Chúng minh rằng ba điểm D, B, H thẳng hàng. d. Giả sử \widehat {ACB} = {30^0}. Chứng minh rằng D là trọng tâm tam giác BFC

Apoll is being conducted at a mall nothingto obtain a sample of the population of an entire country. what is the frame for this type of​ sampling? who would be excluded from the survey and how might this affect the results of the​ survey? what is the frame for this type of​ sampling? a. the frame is people who need new clothes. b. the frame is people who shop at the mall. c. the frame is people who like to shop. d. the frame is the entire population of the country. who would be excluded from the survey and how might this affect the results of the​ survey? a. any person that does not need new clothes is excluded. this could result in sampling bias due to undercoverage. b. any person who does not shop at the mall is excluded. this could result in sampling bias due to undercoverage. c. any person who does not shop at the mall is excluded. this could result in nonresponse bias due to people not participating in the poll. d. there is nobody that is being excluded from the survey.

Choose the correct translation for the following statement. it is at most ten. x< 10 x< 10 x> 10 x> 10

Y+ 2/y is it a polynomial in one variable or not? and if so, why?