Answer:
256
Step-by-step explanation:The total amount os students is 1640 which is equivalent to 100% so we get 50% of 1640 which is equall to 820 students after that we also find 35% of 1640 which is equall to 564 students. After that we sum them up which we get 1384 students and subtract it from 1640 and get 256 students.
Answer is B.
We see the center lines are 80 and 85 as stated.
A is wrong because the range of class 2 is less.
C is wrong; class 2 has a minimum of 50
D is wrong; class 2 has a smaller interquartile range, which is the width of the boxes.
Answer:
320.416
Step-by-step explanation:
Answer:

Step-by-step explanation:
step 1
Find the slope of segment HI
The formula to calculate the slope between two points is equal to

we have
H (-4,2), and I (2,4)
substitute the given points


simplify

step 2
Find the slope of the perpendicular line to segment HI
we know that
If two lines are perpendicular, then their slopes are opposite reciprocal (the product of their slopes is equal to -1)

we have

so

step 3
Find the midpoint segment HI
we know that
The formula to calculate the midpoint between two points is equal to
we have
H (-4,2), and I (2,4)
substitute
step 4
we know that
The perpendicular bisector of HI is a line perpendicular to HI that passes though the midpoint of HI
Find the equation of the perpendicular bisector of HI in point slope form

we have

substitute

step 5
Convert to slope intercept form

Isolate the variable y



step 6
Convert to standard form

where
A is a positive integer
B and C are integers

Adds 3x both sides

see the attached figure to better understand the problem
The slope of this graph would be -1/3 because it goes down 1 unit and over 3 units