menu
QAmmunity.org
Login
Register
My account
Edit my Profile
Private messages
My favorites
Ask a Question
Questions
Unanswered
Tags
Categories
Ask a Question
Chứng minh rằng ta có A-(A-B)=B khi và chỉ khi B ⊂ A
asked
Nov 10, 2022
137k
views
5
votes
Chứng minh rằng ta có A-(A-B)=B khi và chỉ khi B ⊂ A
Mathematics
college
Polis
asked
by
Polis
8.8k
points
answer
comment
share this
share
0 Comments
Please
log in
or
register
to add a comment.
Please
log in
or
register
to answer this question.
1
Answer
7
votes
When converted to a household measurement, 9 kilograms is approximately equal to a
Apollow
answered
Nov 14, 2022
by
Apollow
7.7k
points
ask related question
comment
share this
0 Comments
Please
log in
or
register
to add a comment.
← Prev Question
Next Question →
Related questions
asked
May 24, 2023
15.9k
views
. Cho ⃗u, ⃗v, ⃗w là các véctơ đôi một không cùng phương. Chứng minh rằng ⃗u ∧ ⃗v = ⃗v ∧ ⃗w = ⃗w ∧ ⃗u khi và chỉ khi ⃗u + ⃗v + ⃗w = ⃗0.
Kuffel
asked
May 24, 2023
by
Kuffel
8.5k
points
Mathematics
college
1
answer
0
votes
15.9k
views
asked
Oct 2, 2020
24.1k
views
Cau 5.Cho hình chóp S.ABCD có đáy ABCD là hình bình hành , tâm O. Gọi M là trung diem SC a) Tìm giao tuyến của mặt phẳng (SAC) và (SBD); (SAB) và (SCD): b) Tìm giao điểm của AM và (SBD) c) Chứng minh rằng:OM
Pratik Jamariya
asked
Oct 2, 2020
by
Pratik Jamariya
8.3k
points
Mathematics
middle-school
1
answer
0
votes
24.1k
views
asked
Aug 17, 2022
175k
views
Câu 2. Cho hình thang cân ABCD (AB // CD, AB CD). Gọi O là giao điểm của AD và BC, E là giao điểm của AC và BD. Chứng minh rằng: | a) Tam giác AOB cân ở O. b) Các tam giác ABD và BAC bằng nhau. C) EC =
Dave Sumter
asked
Aug 17, 2022
by
Dave Sumter
7.1k
points
Mathematics
high-school
1
answer
4
votes
175k
views
Ask a Question
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.
9.5m
questions
12.2m
answers
Other Questions
How do you can you solve this problem 37 + y = 87; y =
How do you estimate of 4 5/8 X 1/3
A bathtub is being filled with water. After 3 minutes 4/5 of the tub is full. Assuming the rate is constant, how much longer will it take to fill the tub?
i have a field 60m long and 110 wide going to be paved i ordered 660000000cm cubed of cement how thick must the cement be to cover field
Write words to match the expression. 24- ( 6+3)
Twitter
WhatsApp
Facebook
Reddit
LinkedIn
Email
Link Copied!
Copy
Search QAmmunity.org