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GCSE Maths - Solve the equation (2x+3)/(x-4) - (2x-8)/(2x+1) = 1 Give your answer to 2 decimal places.

This is an A* level GCSE Maths question. 'Solve' means we need to find what value x represents, but in the question this x appears on the denominator (bottom half) of the fractions which we can't use. So the...
AR
Answered by Abi R. • Maths tutor
7709 Views

How do I know whether a verb takes haben or sein in the perfect tense?

Haben and sein are used as the auxiliary verbs in the perfect tense before the past participle. Whether you need haben or sein depends on the meaning of the verb you are putting into the perfect tense. Most ...
ZW
Answered by Zoe W. • German tutor
13457 Views

What are the differences between a stack and a queue?

Both the stack and the queue are data structures, i.e. ways of storing data. It is important to know the differences between how these two data structures operate so that you know when to use one or the othe...
ED
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Calculate the total resistance of a circuit with a 300 ohm resistor and 250 ohm resistor in parallel with one another.

Remember that to calculate resistances in parallel, the formula we use is: 1/R t = 1/R 1 + 1/R 2 etc. So that gives us: 1/R t = 1/300 + 1/250 = 0.0073 To find the total resistance we just take the reciprocal...
AK
7458 Views

Differentiate f(x) = 3x^2+5x+3

Remember the rules for differentiation? We take each term which looks like ax n where a and n are just numbers and we turn it into: (an)x n-1 So for this example, we go term by term and get: f'(x) = 6x 2 + 5...
AK
Answered by Alok K. • Maths tutor
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