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What is the size of the interior angle of a regular 12-sided polygon?

The interior angle of a regular shape is the angle found on the inside of the shape at each of its corners. A twelve-sided regular polygon is too complex to remember its geometric rules so we must divide it ...
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Answered by Sam W. • Maths tutor
50427 Views

What is the y-coordinate minimum point of y = 3x^2 + x - 4

if y=3x^2 + x -4 then dy/dx = 6x + 1 setting this equal to zero gives 6x + 1 = 0 so then x = -1/6 putting this x value back into the original equation gives y = -49/12
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Answered by Mike W. • Maths tutor
4146 Views

Calculate the length of the side of the Triangle marked by x.

This would be a question that would test the students understanding of Pythagoras' Theorem. When teaching this before I have often found that students are scared of thee questions because of the name, so I w...
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Answered by Kushaagra S. • Maths tutor
5161 Views

What is the next number in the sequence? 7 18 29 40 51 ?

First find the difference between the numbers. Do this by subtracting the first number from the second number... 18 -7 11 Double check this to see if this runs true for the whole sequence by adding 11 to 18 ...
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Answered by Kate P. • Maths tutor
9291 Views

A curve is defined for x>0 as y = 9 - 6x^2 - 12x^4 . a) Find dy/dx. b) Hence find the coordinates of any stationary points on the curve and classify them.

a) y = 9 -6x^2 - 12x^4 dy/dx = -12x - 48x^3 b) At stationary points dy/dx = 0. -12x - 48x^3 = 0 48x^3 + 12x = 0 4x^3 + x = 0 x (4x^2 + 1) = 0 Either x = 0 or 4x^2 + 1 = 0 However, 4x^2 + 1 = 0 leads to 4x^2 ...
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Answered by Olivia W. • Maths tutor
3933 Views