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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 x²+y²=9. Substitute the equation into another so you have x²+(x+3)²=9. Expand the brackets so that you have x²+x

Answered by Adam B. • Maths tutor

6474 Views

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 characte...

Answered by Hannah V. • English tutor

8128 Views

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 extrem...

Answered by Victoria J. • English Literature tutor

17424 Views

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 increas...

Answered by Mia K. • Chemistry tutor

58589 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...

Answered by Mia G. • Philosophy tutor

2736 Views