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Solve the simultaneous equations: 3x-y=1, x^2+y^2=5

x=1, y=2 x=-2/5, y=-11/5
CW
Answered by Chloe W. • Maths tutor
4466 Views

How have ideas about atomic structure changed through history?

The Greeks were the first to think of atoms, Democritus defined an atom as the smallest indivisible piece of matter using the idea that if you continue to cut a material in half, you must eventually reach a ...
SW
Answered by Scott W. • Chemistry tutor
3891 Views

Work out the value of the following:

36 1/2 = 6(The square root of 36 is 6) 2) 23 0 = 1(Anything to the power of 0 is 1) 3) 27 -2/3 = 3 -2 = 1/3 2 = 1/9
HA
Answered by Hafsah A. • Maths tutor
3423 Views

El sabado pasado, fuiste a la tomatina en Valencia. Escribe un blog para describir tus experiencias.

El sabado pasado, fui a Valencia con mis amigos para la fiesta, La Tomatina. Es una fiesta muy interesante y es agradable porque los participantes se lanzan tomates unos a otros. Es divertissimo! Se lleva a ...
HA
Answered by Hafsah A. • Spanish tutor
2319 Views

How do you find a missing side length in a right-angled triangle?

Use Pythagoras' theorem. a 2 + b 2 = c 2 . The longest side of the triangle is the hypotenuse, and it is the side opposite the right angle. We use the length of this side as 'c' if we have it. 'a' and 'b' ar...
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Answered by James D. • Maths tutor
13243 Views