If each friend got a seventh, there is 7 friends
Answer:
a) y = 0.74x + 18.99; b) 80; c) r = 0.92, r² = 0.85; r² tells us that 85% of the variance in the dependent variable, the final average, is predictable from the independent variable, the first test score.
Step-by-step explanation:
For part a,
We first plot the data using a graphing calculator. We then run a linear regression on the data.
In the form y = ax + b, we get an a value that rounds to 0.74 and a b value that rounds to 18.99. This gives us the equation
y = 0.74x + 18.99.
For part b,
To find the final average of a student who made an 83 on the first test, we substitute 83 in place of x in our regression equation:
y = 0.74(83) + 18.99
y = 61.42 + 18.99 = 80.41
Rounded to the nearest percent, this is 80.
For part c,
The value of r is 0.92. This tells us that the line is a 92% fit for the data.
The value of r² is 0.85. This is the coefficient of determination; it tells us how much of the dependent variable can be predicted from the independent variable.
Answer:
Step-by-step explanation:
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Answer: There are 27 trees that Abe can plant in each row. And there are 1 pine tree and 2 oak tree in each row.
Explanation:
Since we have given that
Number of oak trees = 54
Number of pine trees = 27
According to question, we have given that Abe wants to plant the trees in rows that all have the same number of trees and are made up of only one type of tree.
So, the greatest number of trees is given by
Hence, there are 27 trees that Abe can plant in each row.
Therefore, there are 
We know, 1 g = 1000 mg
so, 1 mg = 1/1000 g
then, 8,450 mg = 1/1000 * 8,450 = 8.450 g
In short, Your Answer would be: 8.450 Grams
Hope this helps!
