a carpenter cut four lengths of wood. The lengths were 36 3/4 in, 36 3/8 in, 37 1/2 in, and z. If the mean of the lengths is 36 5/8 in, what was the length of z?
+130518 a carpenter cut four lengths of wood. The lengths were 36 3/4 in, 36 3/8 in, 37 1/2 in, and z. If the mean of the lengths is 36 5/8 in, what was the length of z?
[ 36.75 + 36.375 + 37.5 + z] / 4 = 36.625
[110.625 + z] /4 = 36.625 multiply both sides by 4
110.625 + z = 146.5 subtract 110.625 from both sides
z = 35.875 = [35 + 7/8] in
