Answer:
a₁₂ = - 4194304
Step-by-step explanation:
the nth term of a geometric sequence is
= a₁ 
where a₁ is the first term and r the common ratio
here a₁ = 1 and r =
= - 4 , then
a₁₂ = 1 ×
= - 4194304
Answer:
4.52 x 10^-7
Step-by-step explanation:
you have a very small number (numbers to right of decimal) so you're exponent will be negative.
Angles 6 and 7, because they are alternate along the transversal.
Also angles 1 and 4.