To find the mean, you have to add all the numbers and divide by how many numbers there are in total.
The mean is

The mean of those seven numbers is
54.29
Answer: (x-6)2 + (y+3)2=4
Step-by-step explanation:
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Where are the following set of words
To answer, allow the width of the frame to be represented by x. The dimensions of the frame should then be, 11+2x and 6+2x. Subtracting the area of the inside of the frame from the area of the outside should be able to give us 18 cm². The equation,
(11 + 2x)(6 + 2x) - (11)(6) = 18
The value of x from the equation is equal to 0.5. Thus, the width of the frame should be 0.5 cm.