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What are the possible ways to find the roots from a quadratic equation?

quadratic equation where the coefficients of the quadratic equation: ax^2 + bx + c are substituted into the formula: [-b +- (b^2 - 4ac)^0.5] / 2a. The roots are what x equalscompleting the square where the c...
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Answered by Sophie B. • Maths tutor
3897 Views

Factorise and Solve x^2 + 10x + 15 = -6

To factorise an equation like this we must first make the equation equal to 0 therefore it becomes: x^2+10x+21.Now we have the equation in a way that we can work with it we can factorise.To do this we need t...
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Answered by Joseph V. • Maths tutor
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Yesterday it took 5 cleaners 4 and ½ hours to clean all the rooms in a hotel. There are only 3 cleaners to clean all the rooms in the hotel today. How much time will it take them?

Firstly we need to identify what is the underlying principle of this question and what are the assumptions we have to make. We are given some information about the cleaning process in a hotel. The variables ...
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Answered by Viola V. • Maths tutor
13560 Views

Explain the sliding filament model of skeletal muscle contraction

An action potential on a motor axon reaches the axon terminal, causing acetylcholine to be released. It diffuses across the neuromuscular cleft in synaptic vesicles and binds with acetylcholine receptors on ...
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Answered by Maddie P. • Biology tutor
2481 Views

Décris une journée typique.

Ma journée commence quand je me réveille à 7 heures du matin. Je me lève, je m'habille, je mange mon petit déjeuner et je me brosse les dents. Ensuite, ma maman m'accompagne à l'école. A l'école j'apprends b...
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Answered by Sophie B. • French tutor
11271 Views