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There are 7 blue pens, 4 green pens and 6 red pens in a box. One pen is taken at random from the box. Write down the probability that this pen is blue

First of all you need to work out the total number of pens. 7+4+6=17. How many of these 17 pens are blue? 7. If you pick one pen out of the 17, 7 of them would be blue. To work out the probability, you need ...
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Answered by Tobias H. • Maths tutor
19348 Views

The curve, C has equation y = 2x^2 +5x +k. The minimum value of C is -3/4. Find the value of k.

Notes: At the minimum point of the curve, the gradient is = 0. You can find the gradient of a curve by taking the derivative of a point in the curve. We also know that when the curve is at a minimum, y =-3/4...
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Answered by Baraqat H. • Maths tutor
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Was sollen wir machen, um die Flüchtlingskrise zu helfen?

This is the kind of question a student could be asked as part of their speaking exam. The most important thing in this exam is to keep talking, which is why I start by asking the students if they have phrase...
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Answered by Valentyna F. • German tutor
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How do I find the minimum point for the equation y = x^2 -5x - 6?

The minimum point for the curve can be found by finding the point at which the gradient is zero, where the curve is instantaneously level, before increasing again. This can be done by differentiating the equ...
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Answered by Alex U. • Maths tutor
6794 Views

How do I structure a personal statement?

Begin the personal statement by being direct and introducing yourself and what it is your applying for. With a personal statement for university, it is important to follow on with a paragraph explaining why ...
VJ
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