Step-by-step explanation:
The mean is the average. Add up all the points, then divide by the number of points.
(12 + 17 + 11 + 13 + 17 + 15) / 6 = 14⅙
Answer:
Yes
Step-by-step explanation:
The octopus chose the rectangles 68% of the time. From this observation you can tell that the octopus has learned there is food under the rectangular shape. Its cognitive abilities are less than a human's, but they are able to discern a rectangle from a circle with success.
Good luck ^^
Answer:
Loss = 16.67%
Step-by-step explanation:
Assume cost price(CP) of 1 article = x
Therefore cost price of 25 articles = 25x
Given cost price of 25 article = selling price of 30 articles
Clearly, it is a loss.
Selling price(SP) of 30 articles = 25x


Answer: b = 4
Step-by-step explanation:
<u>Given</u>
4b + 5 = 1 + 5b
<u>Subtract 4b on both sides</u>
4b + 5 - 4b = 1 + 5b - 4b
5 = 1 + b
<u>Subtract 1 on both sides</u>
5 - 1 = 1 + b - 1

Hope this helps!! :)
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