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A mirror yields an image 8cm behind it when an object 40cm is in front of it. Calculate it’s focal length and the type of mirror

By Eloise

A mirror yields an image 8cm behind it when an object 40cm is in front of it. Calculate it’s focal length and the type of mirror

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Eloise

Find the square of:

[tex]i) \: 2a \: + \: b [/tex]
[tex]ii) \: 3a \: + \: 7b[/tex]


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The equation for the statement ‘ one third of a number added to 25 is 60 ‘
a p/3 + 60 = 25
b p/3 + 40 = 25
c

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