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The rectangles A and B have perimeters of 94cm and 56cm as shown below (insert diagram). Rectangle A: base = 2x cm, height = 3y cm. Rectangle B: base = (x+6)cm, height = (y+4)cm. Use an algebraic method to calculate the area of each rectangle. (8 marks)

Formulas needed: Perimeter of rectangle = 2*(base + height) Area of rectangle = base * height. Using the information given we need to define the perimeter of A and B algebraically. Rectangle A: base = 2x, he...
UQ
Answered by Umar Q. • Maths tutor
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Differentiate y = (x^2 + 1)^1/3

Use the chain rule to do this. First set u= x^2 + 1. We chose u to be this because u 1/3 is much simpler to differentiate. Then find du/dx = 2x. Now find dy/du = 1/3 * u -2/3 = 1/3 * (x 2 +1) -2/3 . Now by t...
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Answered by Will W. • Maths tutor
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How do you use the perfect tense?

The perfect tense is a way to talk about what has happened in the past. It is a way of expressing something that happens in the past generally, it's something you have done, probably many times and are likel...
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Answered by Nina V. • German tutor
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How do you compare two different texts?

When comparing two texts there are a few things to consider:Form (what is it? what type of text? It could be: an article, blog, letter etc)Purpose (what is the author trying to do with the text? inform, pers...
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Answered by Nina V. • English tutor
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Explain how an action potential is transmitted across a cholinergic synapse.

The action potential arrives at the synaptic knob of the presynaptic neurone. The action potential stimulates the opening of voltage-gated calcium ion channels in the presynaptic neurone, allowing calcium io...
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Answered by Kathryn E. • Biology tutor
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