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Describe and explain how blood glucose levels are controlled following a meal.

Following a meal, the levels of glucose in the blood will increase. This increase in the level of glucose needs to be controlled, otherwise the levels of glucose will become too high and someone could end up...
DU
Answered by Dr Usama A. • Biology tutor
3539 Views

How can I use the Pythagoras' Theorem to work out the length of a missing side of a triangle?

We have the triangle ABC. AB = 3 BC = 4 AC = ? By inputting these numbers into the Pythagoras' Theorem, we can out the length of the missing side (AC). a 2 + b 2 = c 2 AB 2 + BC 2 = AC 2 9 + 16 = AC 2 25 = A...
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Answered by Zhane E. • Maths tutor
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When do we use the imperfect tense and how is it formed?

The imperfect tense is used for continuous, ongoing actions in the past. It is often used for descriptions (when we are 'setting the scene') in the past, and it is used when we talk about things that we 'use...
JH
Answered by James H. • French tutor
2558 Views

A curve has equation y = 20x −x2 −2x3 . (A) Find the x-coordinates of the stationary points of the curve.

Firstly, differentiate the equation to find dy/dx. dy/dx = 20 - 2x - 6x 2 As dy/dx represents the gradient, we know that for a stationary point the gradient must be zero, hence for the stationary points, we ...
BW
Answered by Bradley W. • Maths tutor
6369 Views

Show that (x + 1)(x + 2)(x + 3) can be written in the form ax3 + bx2 + cx + d where a, b, c and d are positive integers.

lets expand the first two brackets first, so x * x gives x 2 , x * 2 gives 2x, x * 1 gives x and 1 * 2 = 2. 2x and x are both in terms of x so we add these together to get 3x, giving us the quadratic (x 2 + ...
AC
Answered by Annunzia C. • Maths tutor
28982 Views