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Solve (x/4)-(2x/x+2) = 1. Give your solutions to 2 decimal places. You must show your working.

We will begin by eliminating fractions in the equation. To do this, the equation will be multiplied by 4 and (x+2), as these are the denominators of the two fractions. Multiplying by 4 gives:x - (8x/x+2) = 4...
DZ
Answered by Dogu Z. • Maths tutor
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Describe how oxygen in the air reaches the capillaries surrounding the alveoli.

As you breathe in, air passes down your trachea and then into the bronchi and bronchioles. The bronchioles divide further into even narrower branches which end in small air filled sacks called alveoli. The a...
NA
Answered by Naomi A. • Biology tutor
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What are the shape of p orbitals?

The shape is a figure of 8 across all three axis, with a node at the origin
GD
Answered by George D. • Chemistry tutor
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When you are working out dy/dx = 0, why do you do this and what does it mean?

It relates back to what we actually mean why we say dy/dx. Simply put, dy/dx means the rate of change of y with respect to the rate of change in x over a infinitely small space of time. Therefore, when we ar...
MJ
Answered by Matthew J. • Maths tutor
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What is the sequence of events involved in transmission across a cholinergic synapse

For transmission across the synapse to be initiated, an action potential must arrive at the pre-synaptic knob and open voltage- gated ion channels. Once the channels are open, calcium ions are able to diffus...
ES
Answered by Ellen S. • Biology tutor
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