Bài 9: Cho ∆ABC có AC > AB, trung tuyến AM. Trên tia đối của tia MA lấy điểm D sao cho MD = MA . Nối C với D
a. Chứng minh .Từ đó suy ra:

b. Kẻ đường cao AH. Gọi E là một điểm nằm giữa A và H. So sánh HC và
HB; EC và EB.

For which of the following counts would a binomial probability model not be reasonable? a)the number of people in a classroom born in januaryb) the number of people in a classroom with red hair c) the number of people admitted to a hospital in a day with a particular disease d) the number of heart beats in a one-minute perio.

Acompany wants to reduce the dimensions of its logo by one fourth to use on business cards. if the area of the original logo is 4 square inches, what is the area of the logo that will be used on the business cards?

What is the expression in factored form? 3x^2 + 18x + 24 a. 3(x+2)(x+4) b. 3(x-2)(x+4) c. 3(x-2)(x-4) d. 3(x+2)(x-4)