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

For one history test, keith had to answer 40 questions. of these 40 questions, keith answered 28 of them correctly. what percent did keith get on his history test? round your answer to the nearest tenth if necessary

According to modern science, earth is about 4.5 billion years old and written human history extends back about 10,000 years. suppose the entire history of earth is represented with a 10-meter-long timeline, with the birth of earth on one end and today at the other end.

Suppose you are going to graph the data in the table. minutes temperature (°c) 0 -2 1 1 2 3 3 4 4 5 5 -4 6 2 7 -3 what data should be represented on each axis, and what should the axis increments be? x-axis: minutes in increments of 1; y-axis: temperature in increments of 5 x-axis: temperature in increments of 5; y-axis: minutes in increments of 1 x-axis: minutes in increments of 1; y-axis: temperature in increments of 1 x-axis: temperature in increments of 1; y-axis: minutes in increments of 5