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How far did the lives of black americans change 1930-2000?

The lives of black Americans changed to a great extent in the period mentioned. In the eyes of the law, their lives saw many positive changes. At the beginning of the period, the laws known as 'Jim Crow' ...

Answered by Jacob H. • History tutor

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Prove by induction that, for all integers n >=1 , ∑(from r=1 to n) r(2r−1)(3r−1)=(n/6)(n+1)(9n^2 -n−2). Assume that 9(k+1)^2 -(k+1)-2=9k^2 +17k+6

First, recall how to construct a proof by simple induction in this manner: (1) Assume statement true for n=k, (2) Prove true for n=k+1, (3) Show true for n=1.(1) => ∑(from r=1 to k) r(2r−1)(3r−1)= (k/6...

Answered by Thomas K. • Further Mathematics tutor

6124 Views

Integrate ((7e^(x/2))/4) with respect to x within the bounds of x=0 and x=2. (Basic introduction to definite integration)

Check to see if anything can be removed from withing the integral and taken out the front. In this case, 7/4 can be taken out the front (as it is not dependent on x), leaving only the term e^(x/2) to be i...

Answered by Niall M. • Maths tutor

2814 Views

¿Qué sabes tú de las relaciones multiculturales en el mundo hispánico?

Puntos que mencionar:-El pueblo indígeno en países como Bolivia (Aymara) y Chile (Mapuche).-España acoge a muchos inmigrantes, por eso su población se Vuelve en muy multicultural. Por ejemplo, muchos vien...

Answered by Benjamin C. • Spanish tutor

4298 Views

Why did Mary Queen of Scots arrival in England in 1568 cause problems for Elizabeth?

BackgroundMary fled into England in May 1568, having been defeated by her Scottish nobles. Following the murder of her dashing but difficult husband Henry Darnley, Mary ...

Answered by Kimberley F. • History tutor

11301 Views