Answer:
B
Step-by-step explanation:
3(x-7) = 138 + 3x First multiply
3x-21 = 138 + 3x subtract 3x from both sides
-21 = 138
This is a false statement because -21 does not equal to 138 so the answer is no solution.
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Answer:
heights are:
66, 74, 76, 77, 78, 79, 80, 80, 82, 84
The mean is: 77.6 inches
Step-by-step explanation:
removing 66 will make the mean increase to 78.9
The set has 66 as an outlier and removing it increases the mean by about 1.3 inches.
Step-by-step explanation:
120 + 400= 520 i think sorry not to sure
