Mathematics, 30.07.2021 02:50 Emptypockets451
Cho tứ diện ABCD có các cạnh BA, BC, BD đôi một vuông góc với nhau và có gọi M, N lần lượt là trung điểm của AB và AD .Tính thể tích V của khối chóp C. BDNM
Answers: 2
Mathematics, 21.06.2019 18:30
Astick 2 m long is placed vertically at point b. the top of the stick is in line with the top of a tree as seen from point a, which is 3 m from the stick and 30 m from the tree. how tall is the tree?
Answers: 2
Mathematics, 21.06.2019 19:00
To solve the system of equations below, pedro isolated the variable y in the first equation and then substituted it into the second equation. what was the resulting equation? { 5y=10x {x^2+y^2=36
Answers: 1
Mathematics, 21.06.2019 19:30
If the ratio of sum of the first m and n terms of an ap is m2 : n2 , show that the ratio of its mth and nth terms is (2m − 1) : (2n − 1).
Answers: 1
Cho tứ diện ABCD có các cạnh BA, BC, BD đôi một vuông góc với nhau và có gọi M, N lần lượt là trung...
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