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Evaluate 3 /5 + 1/ 4

5×4=20 common denominator what did you do to 5 to get to 20? X4, therefore you have to 3x4=12what did you do to 4 to get to 20? X5, therefore you have to 1x5=5
12/20 + 5/20= 17/20

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Answered by Vickie K. Maths tutor
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Describe Atkinson & Shiffrin's (1968) Multi Store Memory Model

The Atkinson & Shiffrin Multi Store Model of Memory is a structural model that helps to explain how information is transferred from the environment into our short-term and long-term memory. The model ...

RC
Answered by Raquel C. Psychology tutor
5208 Views

In what ways is the human heart not simply a mechanical pump?

The heart could be compared to a pump but the key differences lie in its exquisite ability to self control. Through local mechanisms (e.g. Frank-starling mechanism) and external mechanisms (e.g. neurol or...

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Express 3sin(2x) + 5cos(2x) in the form Rsin(2x+a), R>0 0<a<pi/2

Start by expanding out Rsin(2x+a) using the addition formula for sin, sin(A+B) = sin(A)cos(B)+cos(A)sin(B). Substituting 2x = A and a= b, we get that Rsin(2x+a) = R(sin(2x)cos(a) + cos(2x)sin(a)) = Rcos(a...

MF
Answered by Michael F. Maths tutor
9813 Views

Explain how the theme of love is presented in Shakespeare's "Much Ado About Nothing"

This is an essay question that could come up in A Level based on the syllabus' I have looked at; there is not time or space to write out the full essay here, so I have gone for three key bullet points I w...

NT
Answered by Nathan T. English tutor
3155 Views

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