You have 10 batteries 3/10 are dead there are only 7/10 batteries that are good. So the expected number of good batteries you could get is 7.
Answer:

Step-by-step explanation:
Slope of the line segment = [(-8)-(-2)]/[(-9)-3]=-6/-12=1/2
Slope of the perpendicular bisector x slope of line segment = -1
Slope of perpendicular bisector = -2
Mid-point of line segment = ((-9+3)/2, (-8+(-2))/2) = (-3, -5)
The perpendicular bisector passes through the mid-point.
By point-slope form,

Answer: B = ( -3 , 2)
Step-by-step explanation:
You would use a mid point formular because you are trying to find the middle of a line . The midpoint formular is (X1 + X2 , Y1 + Y2 )
/2 /2
From the information given A is (7 , -2 )
If you fill it in it would be 7 + X , -2 + X
/2 /2 = (2 , 0 )
The only posible solution would be 7- 3 /2 , -2 + 2 / 2
Makeing B (-3, 2).
Answer b is the church of church church and
A golden rectangle is a rectangle whose length and width follow the golden ratio (about 1:1.618).
Given the length, you would divide by 1.618 to find the width.
Edit: The exact value is

, but 1.618 should suffice.