Mathematics, 15.06.2021 14:00 vick67
Cho tam giác abc vuông tại a, đường cao ah.
a, chứng minh tam giác abh đông dạng với tam giác cba
b, cho bh bắng 4cm, bc bằng 13cm, tính độ dài đoạn ab
c, gọi e là điểm tùy ý trên cạnh ab, đường thẳng qua h và vuông góc với he cắt cạnh ac tại f. chứng minh ae. ch bằng ah. fc.
d, tìm vị trí của điểm e trên cạnh ab để tam giác ehf có diện tích nhỏ nhất
Answers: 3
Mathematics, 21.06.2019 18:00
Ateacher noticed 5/8 of the students were wearing either blue shorts or white shorts. write two different ways this could be done.
Answers: 2
Mathematics, 21.06.2019 20:00
Can someone factor this fully? my friend and i have two different answers and i would like to know if either of them is right. you in advance. a^2 - b^2 + 25 + 10a
Answers: 1
Mathematics, 21.06.2019 21:50
Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?
Answers: 1
Mathematics, 21.06.2019 22:00
Asquare and an equilateral triangle have the same perimeter. each side the triangle is 4 inches longer than each side of the square. what is the perimeter of the square
Answers: 1
Cho tam giác abc vuông tại a, đường cao ah.
a, chứng minh tam giác abh đông dạng với tam giác cba <...
Mathematics, 11.07.2021 09:00
Mathematics, 11.07.2021 09:00
Mathematics, 11.07.2021 09:00
Biology, 11.07.2021 09:00
Mathematics, 11.07.2021 09:00
Mathematics, 11.07.2021 09:00
History, 11.07.2021 09:00
English, 11.07.2021 09:00
Mathematics, 11.07.2021 09:00
Mathematics, 11.07.2021 09:00
Social Studies, 11.07.2021 09:00
Social Studies, 11.07.2021 09:10
Chemistry, 11.07.2021 09:10
Mathematics, 11.07.2021 09:10
Computers and Technology, 11.07.2021 09:20
Computers and Technology, 11.07.2021 09:20