Which statement must be true according to the histogram?
The ages of the people in attendance at the showing of an
award-winning foreign film are shown below.
Attendees of Film
The data is symmetrical, showing that the majority of the
attendees were between the ages of 30 and 50
The data is symmetrical showing that the majority of the
attendees were between the ages of 21 and 60.
The data is skewed, showing that the majority of the
attendees were between the ages of 30 and 50.
The data is skewed, showing that the majority of the
endees were between the ages of 21 and 60.
Frequency
0-20 21-40 41-60 61-30
Age of attendees (in years)

B

Step-by-step explanation:

idk i guessed and got it right hope this help in some way.

the value of v.w= -12.

step-by-step explanation:

we are given three vector r,v and w as:

r = < 5, -5, -2> ; v = < 2, -8, -8> ; w = < -2, 6, -5>

we know that r,v and w could also be represented as:

r=5i-5j-2k

v=2i-8j-8k

and w= -2i+6j-5k

where i,j and k are the unit vectors of x,y and z-axis respectively.

also we know that it has the following property:

i.i=1 ; j.j=1; k.k=1

and i.=j.i=i.k=k.i=j.k=k.j=0

i.e. when we multiply two vectors or we find it's dot product we need to only multiply the components of x coordinates with each other; y with each other and z with each other.

hence, v.w= (2i-8j- -2i+6j-5k)

                  = 2×(-2)+(-8)×(6)+(-8)×(-5)

                  = -4-48+40

                  = -12

hence, v.w= -12