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abruzzese [7]
3 years ago
5

Please help asap!!! !!!

Mathematics
1 answer:
erica [24]3 years ago
6 0
(36 3/4" + 36 3/8" + 371/2" +z) /4 = 36 5/8" 
This is the equation that you would get for the average. Now we just solve for z. 
Following PEMDAS you have to mulitply the equation by 4 to get rid of the divide by 4 part. 
4( (36 3/4" + 36 3/8" + 371/2" +z) /4 = 36 5/8)
Which does this
 36 3/4" + 36 3/8" + 371/2" +z = 146 1/2" 
Now you have to add and subtract to get "z" by itself. 
36 3/4" + 36 3/8" + 371/2" = 110 5/8" 
(110 5/8" + z = 146 1/2" ) -110 5/8"
z= 35 7/8", so the answer is b
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