In go a1=20 a4=540 then find r
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Answer:
a
1
=20
a=20
\begin{gathered}a_4=540\\\\a\:{r}^3=540\\\end{gathered}
a
4
=540
ar
3
=540
\begin{gathered}{r}^3=\frac{540}{a}\\\\{r}^3=\frac{540}{20}\\\\{r}^3=27\\\\r=3\end{gathered}
r
3
=
a
540
r
3
=
20
540
r
3
=27
r=3
Step-by-step explanation:hope it is help ful for u
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