- Key -
Black tiles = x
Purple tiles = x+50
Yellow tiles = 5x
-
Total = x + x+50 + 5x = 400
⇒ 7x + 50 = 400
⇒ 7x = 400-50 = 350
⇒ x = 350/7
⇒ x = 50
Black tiles = 50
Purple tiles = 50+50 = 100
Yellow tiles = 5 x 50 = 250
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
Answer:
Option C.
Step-by-step explanation:
It is given that planes A and B intersect in line s.
It means, all points lie on the line s must be lie on both plane A and B because s is the line of intersection of both plane A and B.
It is given that V is a point on line s.
Since, the point V lies on line s, therefore it is also lies on both plane A and B.
Hence, the correct option is C.
Answer:
hi how are you doing?
Step-by-step explanation:
Answer: 10.5 : 20.2
Step-by-step explanation:
