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Find the max/min value of the function: f(x) = 5x^2 - 20x + 15

A quadratic function will either have a minimum or a maximum value depending on the shape of the function. A quadratic function with a positive value in front of the x^2 term has a U shape and therefore has ...
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Answered by Peter H. • Maths tutor
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Expanding Brackets: (x+3)(x+4)

Expanding Brackets: 1) FOIL (first pair, outer pair, inner pair, last pair) 2) (x+3)(x+4)=x^2+4x+3x+12 3) exemplifying why to do FOIL method by subbing in a value for x (e.g. x=3) 4) (3+3)(3+4)=6x7=42 5) usi...
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Answered by Ruben P. • Maths tutor
3683 Views

Veuillez écrire une lettre de motivation de 200 mots adressée à votre futur employeur. (Please write a 200-words cover lettre to your futur employer ?)

Le 28 mars 2017Chère Madame, Cher Monsieur, Mon nom est Océane Delannoy. Je termine ma première année de bachelier bilingue néerlandais-français en sciences politiques à l’ULB. J’aurais souhaité travailler e...
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Answered by OCEANE D. • French tutor
5541 Views

What is meant by the lag time on a flood hydrograph?

The lag time is the time difference between the peak rainfall and the peak discharge that occurs as a result.
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Answered by Laura C. • Geography tutor
7656 Views

Calculate the coupon rate for a 5 year £500 bond that has a coupon value of £10

(10 x 5) (coupon value x length of bond) = 5050/500 (previous answer/bond value) = 0.10.1 x 100 (coupon rate as percentage) = 10%
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Answered by Laura C. • Economics tutor
3613 Views