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+0
230622 Questions
0
1029
5
+343
I need help in a matrix problem
I have this matrix A= and i need to find matrix P,Q so that PAQ= But i find after trades for lines the 3,4 element its 1 and this cannot change with trades at columns.I'm correct and if not where im wrong? Thank
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Dimitristhym
Nov 1, 2018
+1
854
8
+1124
Good day all you good people!,
Good day all you good people!,
I have something here I need to understand..please help me:
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juriemagic
Nov 1, 2018
0
370
1
URGENT! I've been struggling all day with compound interests
Using this formula:
P = A(r/n) / 1-(1+ r/n)^-nt
where A = 153000 r= 4.5% (0.045) n=12
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Guest
Nov 1, 2018
0
502
1
help plz
How many integers $m$ are there such that $0
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Guest
Nov 1, 2018
0
2669
5
Probability question
A box contains six cards. Three of the cards are black on both sides, one card is black on one side and red on the other, and two of the cards are red on both sides. You pick a card uniformly at random from the box and look at a random side.
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Guest
Nov 1, 2018
0
1184
2
Please help.
Let $n$ be a positive integer. What is the greatest possible value of $\gcd(n + 7, 2n + 1)$?
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Guest
Nov 1, 2018
Oct 31, 2018
0
1287
4
Prove that \[1{n\choose 1} + 2{n\choose 2} + 3{n \choose 3} + \cdots + n{n\choose n} = n2^{n-1}\]for all positive integers $n$.
Prove that \[1{n\choose 1} + 2{n\choose 2} + 3{n \choose 3} + \cdots + n{n\choose n} = n2^{n-1}\] for all positive integers n.
This might be a repost of one of Mellie's questions, but I don't know.
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Guest
Oct 31, 2018
+1
1712
3
+1242
Geometry
In the following diagram, AB=50. Find AX.
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Lightning
Oct 31, 2018
+9
2
2818
10
+36916
Blank questionion
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ElectricPavlov
Oct 31, 2018
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