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

Multiply both sides of the equation by the denominators to get:(2x+3)(2x+1) - (2x-8)(x-4) = (x-4)(2x+1)Expand all the brackets to get:(4x^2 + 6x + 2x + 3) - (2x^2-8x-8x+32) = 2x^2-8x+x-4Simplify both side...

Answered by Natalie S. • Maths tutor

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What are the four chambers of the heart and what is the order blood flows through them?

The four chambers of the heart are the right atrium, right ventricle, left atrium and left ventricle.Deoxygenated blood (blood with no oxygen) flows into the right side of the heart via the superior and i...

Answered by Kirk C. • Human Biology tutor

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Which of these sentences is correct? 1: El perro era negro y energético, 2: El perro fue negro y energético or 3: El perro era negra y energético.

The correct answer is number 1. Number 2 is incorrect because it uses the preterite tense, which denotes a punctual, completed action in the past rather than a continual state of being. Number 3 is incorr...

Answered by Emma M. • Spanish tutor

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In terms of pressure and volume, explain the changes that take place in the chest to allow ventilation to occur.

Think through inhalation and exhalation separately and the events step-wise. Be aware of the movements of your own chest when breathing in and out.Inhalation (breathing in):The external intercost...

Answered by Alice H. • Biology tutor

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Describe the role of different structures (shown in the figure below) involved in the coordination of a reflex action and the sequence of events that occur(6 marks).

A receptor detects a stimulus and generates electrical impulses in response. Electrical signals are then conducted by a sensory neuron to the spinal cord. Neurotransmitter molecules then cross the synapse...

Answered by Laura S. • Biology tutor

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