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What was the significance of President Reagan in ending the Cold War?

The Triumphalist school of historical thought will argue that it was President Reagan's policies that forced the end of the Cold War. His massive increase in defence spending (about a 50% increase in the 198...
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Answered by Ruby K. • History tutor
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Work out 2/3 - 1/4

numerator/denominator First we need to find the common denominator (a number that can be divided by both 3 and 4) 3 x 4 = 12 (so our new, common, denominator is 12) Whatever we do to the bottom of a fraction...
Answered by • Maths tutor
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Solve the Simultaneous equations 4x - y = 8 and x + y = 12

One basic method used here, when you have an equation and you add, subtract, multiply or divide one side of the equation from the equal sign, you must add, subtract, multiply or divide by the same value on t...
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Answered by Cameron E. • Maths tutor
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Explain the process of mitosis.

Mitosis is a process that is normally explained in four stages - prophase, metaphase, anaphase and telophase. In prophase , the chromosomes condense and clump together in the middle of the cell. They duplica...
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Answered by Megan L. • Biology tutor
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For a homogeneous second order differential equation, why does a complex conjugate pair solution (m+in and m-in) to the auxiliary equation result in the complementary function y(x)=e^(mx)(Acos(nx)+Bisin(nx)), where i represents √(-1).

For a second order differential equation, our auxiliary equation, am 2 +bm+c=0, has two roots. Let's denote these roots as A and B. Note that A and B can be the same if there is a repeated root, but we're no...
JB
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