Find the sum of a 9-term geometric sequence when the first term is 4 and the last term is 1,024?
1 answer:
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Answer:
Step-by-step explanation:
First you have to set up the equation:
The statement says three tickets in Japan plus two tickets in Switzerland cost 89.59
You can set up the first equation this way:
Next similarly the second equation will be:
And you solve the sistem of two equations.
