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Solve these simultaneous equations. x^2+y^2=9, x-y+3=0

Rearrage so you have x+3=y, and x 2 +y 2 =9. Substitute the equation into another so you have x 2 +(x+3) 2 =9. Expand the brackets so that you have x 2 +x 2 +6x+9=9. Then you rearrange so it's all on one sid...
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Answered by Adam B. • Maths tutor
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Explore the theme of light in John Steinbeck's Of Mice and Men.

Steinbeck's Of Mice and Men was set during the great depression in America during the 1920s- a time of great austerity, yet a time for the young men of America to dream. George and Lennie are two characters ...
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Answered by Hannah V. • English tutor
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In the novel 'Ready Player One', how is Wade Watts presented as a hero?

Whilst Cline's novel is science fiction, he also draws inspiration from medieval literature, more specifically the legend of King Arthur and the Knights of the Round Table. Firstly, Wade chooses an extremely...
VJ
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Explain why the first ionization energy of sodium is less than that of magnesium?

Ionization energy is the energy required to remove the most loosely bound electron from an atom. As the nuclear charge of an atom increases and the size of an atom decreases, the ionization energy increases,...
MK
Answered by Mia K. • Chemistry tutor
59562 Views

Briefly explain ethical naturalism

Ethical naturalism is the theory that how things turn out to be can be derived from how the world naturally is. This means that my sense perception is an accurate means of gathering information about what ex...
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Answered by Mia G. • Philosophy tutor
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