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faithtunison
19.02.2021 •
Mathematics
What is the scale factor for this dilation? how do you know?
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Ответ:
To find the scale factor for a dilation, we find the center point of dilation and measure the distance from this center point to a point on the preimage and also the distance from the center point to a point on the image. The ratio of these distances gives us the scale factor, as Math Bits Notebook accurately states.
Step-by-step explanation:
Ответ:
we need to factorise if imaginary number is in the denominator. no action is required if its in the numerator.
you can factorise an imaginary number by multiplying both the numerator and denominator by the conjuncate of the complex number
for instance,
we've given a complex number as follows
factorising
as 3x -4i is the conjugate of 3x + 4i
and 4i is the imaginary number
and since i² = -1
hence factorised