Answer: a. −0.41
Step-by-step explanation:
The slope for the best-fitting linear equation is given by :-
where , =sum of squared deviations from the mean of X.
= correlation between y and x in terms of the corrected sum of products.
As per given , we have
Then, the value of the slope for the best-fitting linear equation will be
Hence, the value of the slope for the best-fitting linear equation= -0.41
So the correct answer is a. −0.41 .
Answer:
2 and 4
Step-by-step explanation:
Answer:
x^3(4x+1)(4x-1),Option 4
Step-by-step explanation:
16x^5-x^3
x^3(16x^2-1)
x^3(4x+1)(4x-1)
Let the amount they both drive be x miles.
Then as the costs are the same
46 + 0.17x = 55 + 0.12x
0.05x = 55-46 = 9
x = 8/0.05 = 180 miles <------- answer to first part
This cos = 46 + 0.17*180 = $76.60 answer