<span>The excerpt suggests that Johnson’s work is significant because it reflects an exhaustive study of its words.
In the excerpt above, Johnson says that he used many methods in order to compile this dictionary - he read a lot of books, used his experience, and used many analogies for readers to connect words and their meanings on their own. A is incorrect because that's not the point of a dictionary; B is incorrect because he doesn't even mention other dictionaries; D is incorrect because a dictionary cannot only list obscure words.
</span>
Answer:
a = –0.4 and b = 0.15
Explanation:
<em>Shanti wrote the predicted values for a data set using the line of best fit y = 2.55x – 3.15. She computed two of the residual values. What are the values of a and b?</em>
<em />
Residual values are the difference between Given and predicted value. That is:
Residual Value = Given - Predicted
Taking the values of the table:
a = 4.1 - 4.5 = -0.4
a = -0.4
And b is:
b = 7.2 - 7.05 = 0.15
b = 0.15
That means right answer is:
<h3>a = –0.4 and b = 0.15</h3>
