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Give a brief description of the Big Bang and describe its link to cosmic microwave background radiation.

The Big Bang is the leading theory on the creation of the universe. It states that all mass and energy were concentrated at a single point before a large explosion occurred, signalling the start of time. In ...
RM
Answered by Rani M. • Physics tutor
3283 Views

How does Stevenson use Gothic imagery in Strange Case of Dr Jekyll and Mr Hyde?

The 18th century revival of Gothic medieval architecture brought a renewed focus onto the eeriness of setting in popular literature, providing a tool for writers to use their writings to describe the structu...
WN
Answered by William N. • English tutor
20730 Views

Find the coordinates of the turning points of the curve y = 4/3 x^3 + 3x^2-4x+1

First differentiating by the rule that x n differentiates to nx n-1 we have that dy/dx = 4x 2 +6x-4. At the turning points of a curve the differential is equal to 0 so we set 0=dy/dx = 4x 2 +6x-4, by factori...
TE
Answered by Theo E. • Maths tutor
9447 Views

Solve the linear simultaneous equations: 3x + 5y = 45, 2x - 9y = -7

x = 10, y = 3. From the second equation, we have x = (9y - 7)/2. Substituting this expression for x into the first equation gives 3(9y - 7)/2 + 5y = 45. 3(9y - 7) + 10y = 90. 27y - 21 + 10y = 90. 37y = 111. ...
CW
Answered by Cameron W. • Maths tutor
4036 Views

"El alcalde de tu ciudad ha prohibido las cadenas de comida rápida. Tú no estás seguro/a de si esta medida tan extrema es apropiada y decides entrevistarlo. Escribe el texto de la entrevista que será publicada en el periódico local."

This question is taken from Section A of a Spanish HL Paper 2, and roughly translates to: "The mayor of your city has banned fast food chains. You're not sure if such an extreme measure is appropriate a...
TM
Answered by Thomas M. • Spanish tutor
2190 Views