45 is the answer i hope this helps
The <em>echo</em> number 20222022202220222022 is the <em>perfect</em> square of 4496890281.
<h3>What echo number is a perfect square</h3>
An <em>echo</em> number has a <em>perfect</em> square if its square root is also a <em>natural</em> number. After some iterations we found that <em>echo</em> number 20222022202220222022 is a <em>perfect</em> square:

The <em>echo</em> number 20222022202220222022 is the <em>perfect</em> square of 4496890281. 
To learn more on natural numbers, we kindly invite to check this verified question: brainly.com/question/17429689
Answer:
80
Step-by-step explanation:
Use y=Mx+B plug in correct spot
Answer:
3.49 for 8 candles
Step-by-step explanation:
2.99/6=.49833
4.49/9=.49888
5.99/12=.49916
3.49/8=.43625