Answer:
Recursive
a(1) = 9 ; a(n+1) = 3 * a(n)
Explicit
a(n) = 9 * 3^(n-1)
Opposite lateral faces of a rectangular pyramid are congruent.
I think is OPPOSITE .
X divided by two is 5
So you multiply 5 and 2 to get 10. Therefore x equals 10
-420 is your answer
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