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What is the co-ordinates of the minimum point of the quadratic equation x^2+6x-16?

Well this can be rewritten as : (x+8)(x-2), so roots are x=-8, and x=2. So therefore the x co-ordinate of the minimum point is half way between the 2 roots by symmetry. So the x co-ordinate is x=-3. Substitu...
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Answered by Lance O. • Maths tutor
3803 Views

To what extent was the ideology of national socialism responsible for the outbreak of WWII?

The ideology of national socialism had several factors that were responsible for the outbreak of WWII. Primarily, the concept of 'lebensraum' created the political circumstances and environment necessary for...
MJ
Answered by Mihir J. • History tutor
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When is the passé composé used and how is it formed?

When is the passé composé used? The passé composé is a tense which is the equivalent of the simple past (I did) and the present perfect (I have done). It is the most commonly used past tense in French. It is...
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Answered by Francesca T. • French tutor
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A group of 55 students were asked if they had a cat or a dog. 11 were known to own both, 18 said they owned only a dog, and 34 said they owned at least a cat. Give the probability that a student has neither as a fraction in its simplest form.

ANSWER = 3/55
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Answered by Emily R. • Maths tutor
3218 Views

Solve the simultaneous equations: 3x+y=11 and 2x+y=8.

First we want to eliminate of one these variables in order to solve the equations. We need to identify which variable has the same coefficient- in this case, it is y. So, we subtract the two equations from e...
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Answered by Simran K. • Maths tutor
7286 Views