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

Marco has $38.43 dollars in his checking account. his checking account is linked to his amazon music account so he can buy music. the songs he purchases cost $1.29. part 1: write an expression to describe the amount of money in his checking account in relationship to the number of songs he purchases. part 2: describe what the variable represents in this situation.

Abag of jelly beans contain 13 pink, green, 20 yellow, 10 black, 7 red, and 11 orange jelly beans. approximately what percent of the jelly beans are pink and yellow?

When george started his current job, his employer told him that at the end of the first year, he would receive two vacation days. after each year worked, his number of vacation days will double up to five work weeks (25days) of payed vacation. how many vacation days will he have in 4 years