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Work out the value of 125^(-2/3)

Step 1: Write 125 as an exponent. Is there any number you can multiply by itself a few times to give you 125? The answer is 5 because 5 x 5 x 5= 5 x 25 = 125. Step 2: Since we know that 125=5^3, we can repla...
AS
Answered by Araba S. • Maths tutor
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Rearrange y = (3x+5)/x to make x the subject

Step 1: Multiply both sides by x to obtain xy = 3x + 5. Step 2: Place all the 'x' terms on the same side of the equation to obtain xy-3x=5 Step 3: Factor out x from the left side of the equation: x (y-3) = 5...
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Answered by Araba S. • Maths tutor
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Solve the simultaneous equations 2x - 3y = 24 (1) ; 6x + 2y = -5 (2)

The objective of this question is to solve for x and y. Since we cannot directly eliminate x or y, find the lowest common multiple for x in both equations by comparing 2x in equation 1 with 6x in equation 2....
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Answered by Araba S. • Maths tutor
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Describe the process of synaptic neurotransmission

Neurotransmission is a mechanism of propagating an electrical signal between neurons via the movement of charged particles. It is initiated when the arrival of an action potential at the axon terminal trigge...
BH
Answered by Betsy H. • Biology tutor
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Find f''(x), Given that f(x)=5x^3 - 6x^(4/3) + 2x - 3

In order to get from f(x) to f''(x) we need to differentiate the function f(x) with respect to x and then differentiate the resulting function with respect to x again. When differentiating f(x), split the eq...
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Answered by Alexey B. • Maths tutor
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