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P=(3a+5)/(4-a) Make a the subject

P=(3a+5)/(4-a)First of all we need Get rid of the denominator, we do this by multiplying both sides by (4-a)This leaves P(4-a)=3a+5 (as any term multiplied by the denominator leaves only the numerator)The ne...
JS
Answered by Joshua S. • Maths tutor
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How do synapses work?

When an action potential reaches a presynaptic cell, it causes voltage-gated ion channels in the membrane to open, which allows Ca2+ to enter the cell. This Ca2+ diffuses into the cell from high to low conce...
SB
Answered by Sam B. • Biology tutor
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Rearrange v = u + at to make t the subject of the formula

t = (v - u) / a
GK
Answered by George K. • Maths tutor
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f(x)=ln(3x+1), x>0 and g(x)=d/dx(f(x)), x>0, find expressions for f^-1 and g

f^-1(x)=(e^x-1)/3 g(x)=3/(3x+1)
GK
Answered by George K. • Maths tutor
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What are river cliffs and how are they formed?

River cliffs are features of meanders. In a meander the outside bank is where the Thalweg flows(fastest flowing part of the river), this means the velocity is greatest here so there is more available energy ...
KD
Answered by Kitty D. • Geography tutor
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