The table shows the monthly rainfall at a measuring station. what is the mean monthly rainfall? round your answer to the nearest thousandth.

the mean monthly rainfall is blank
inches.

The mean monthly rainfall is 3.245 inches.

To find the mean of a set of numbers, add them all together, and divide the sum of adding the numbers together by how many numbers were in the set. 

I hope this helped!

12 starfish

Step-by-step explanation:

Create a system of equations where x is the number of starfish he has and y is the number of spiders he has:

x + y = 19

5x + 8y = 116

Solve by elimination by multiplying the top equation by -8:

-8x - 8y = -152

5x + 8y = 116

Add these together and solve for x:

-3x = -36

x = 12

So, he has 12 starfish.