Cho ABC vuông tại A có AB < AC. Từ một điểm M trên cạnh BC vẽ Mx vuông góc với BC, cắt cạnh AC tại H, cắt tia BA tại D. a. Chứng minh ABC đồng dạng với MBD b. Chứng minh CH . CA = CM . CB c. BH cắt CD tại P. Chứng minh CH. CA + BH. BP = CB2 d. Cho góc ABC bằng 600 và diện tích CBD bằng 100cm2. Tính diện tích ABM

Emma will roll two number cubes labeled 1 through 6. she will record the sum of the two numbers after each roll. she will roll the two cubes 540 times. how many times should emma expect the sum to equal 5?

In each bouquet of flowers, there are 2 roses and 3 white carnations. complete the table to find how many roses and carnations there are in 2 bouquets of flowers.

The blue whale is the largest animal living on the earth. the average blue whale measures 100 feet long (30 meters) and weighs 300,000 pounds (136,000 kilograms). a whale’s head is 1⁄3 of the length of its body. a new baby whale is 1⁄4 the length of a grown whale. the average man is 1⁄17 the length of a blue whale, and 1⁄1,818 its weight. a human baby measures 1⁄4 of the length of an adult. calculate the following information: how long is a whale’s head? how long is a new baby whale? how tall is the average man? how much does the average man weigh? how tall is the average human baby?