It is 2/5 = 0.4 <span>because of the negative in the exponent.
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Answer:
x = -9
Step-by-step explanation:
Normally 18/2 is 9, but since we’re dividing by a negative, the 9 becomes negative.
So 18/-2 is -9.
The Geometric Sequence Formula:

We have:


Substitute:

Are those the only answer choices?
8 675/1000
8 27/40
hope this helps