Answer:
b and e
Step-by-step explanation:
7/20=2.857142857142857 divide 20 by 7
Percy solved the equation by expanding the expression on the left-hand side, and this is incorrect
<h3>How to determine the true solution?</h3>
The equation is given as:
x^2 + 7x + 12 = 12
The first step in solving the equation is to equate the equation to 0.
i.e.
x^2 + 7x + 12 - 12 = 0
This given
x^2 + 7x = 0
From the question, Percy solved the equation by expanding the expression on the left-hand side
Hence, Percy's solution is incorrect
Read more about equations at:
brainly.com/question/2972832
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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.
