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Solve the formula for a

Solve The Formula For A class=

Sagot :

Answer:

Given formula:

  • [tex]S = a(1-r^n)/(1-r)[/tex]

Solving for a:

  • [tex]S(1-r) = a(1-r^n)[/tex]
  • [tex]a = S(1-r)/(1-r^n)[/tex]

[tex]\\ \tt\longmapsto S=\dfrac{a(1-r^n)}{1-r}[/tex]

  • Use cross multiplication

[tex]\\ \tt\longmapsto S(1-r)=a(1-r^n)[/tex]

[tex]\\ \tt\longmapsto a=\dfrac{S(1-r)}{1-r^n}[/tex]