The least-square regression line has a slope of:
m=(nΣxy-ΣyΣx)/(nΣx²-ΣxΣx)
and a y-intercept of:
b=(Σy-mΣx)/n
In this case: n=7, Σxy=4899, Σy=391, Σx=85, Σx²=1153 so
m=(7(4899)-391*85)/(7(1153)-85*85))=1058/846
b=(391*846-85*1058)/(7*846)=34408/846
So the line of best fit is:
y=(1058x+34408)/846 and if we approximated this as your answers see to have done....
y=1.25x+40.67
The surface area is ≈ 451.92
Answer:
its 42
Step-by-step explanation:
315-18+81=378
Correct mean =378/9=42
Answer:
Below.
Step-by-step explanation:
One is (x - 3)^3.
The graph of the parent function x^3 rises from the lower left quadrant and there is a point of inflection through (0, 0), then it rises to the right in the first quadrant.
The graph of (x - 3)^3 is the translation of the graph of x^3, 3 units to the right. It will pass through the x-axis at (3, 0).
Answer:
3643
Step-by-step explanation:
