janaces31
janaces31
05-11-2017
Mathematics
contestada
rearrange the formula S = a (a - r) for r.
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MagniStratus
MagniStratus
05-11-2017
I'm assuming you're trying to solve for r.
First divide a to both sides
Now you have [tex] \frac{S}{a} [/tex] = a - r
Subtract a to both sides.
And then divide by -1 to both sides.
Now your equation is -[tex] \frac{S}{a} [/tex] + a = r
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AnnaNanc
AnnaNanc
05-11-2017
Expand: a^2 - ar
S= a^2 -ar
S+ ar = a^2
Ar = a^2 - S
R = a^2 - S/ a
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