The answer is 8 hope this helps all u have to do is figure out what two numbers added togher give you 18
Answer:
The equation would be:

In the attachment!!!
<em>Hope this helps!!!</em>
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Answer:
Hi,Can You answer mine too please I really need the answer because I have to pass it tomorrow morning at my 1st class:(can you please check my question I'll mark you BRAINLIEST:)I hope you can help me:)
Step-by-step explanation:
about your question I'll just put it in the comment section:)
Answer: The answer is converges r=1/7