If an is defined as a geometric sequence, is the sequence 1/an also a geometric sequence? Explain your reasoning?

Since An/An-1 = r

(1/An)/(1/An-1) = An-1/An = 1/r

so, the ratio between terms is still constant.

Step-by-step explanation:

the answer is b. 60. each interior angle in 120, so the exterior angle must be 60 in order to add up to 180

step-by-step explanation:

a

step-by-step explanation:

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