Janine is building a box with a height of 10 inches. The rectangular base of her box will have a perimeter of 72 inches. Select the equation where v represents the volume of the box and w represents the width of the base of the box.

A.
v = -10w2 + 720w
B.
v = -20w2 + 720w
C.
v = -100w2 + 3,600w
D.
v = -10w2 + 360w

step-by-step explanation:

i need to answer questions so i dont know but i think its the first one because it goes up but a consent rate

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

he will have 300 because he is really broke and 300 is in his imangine

step-by-step explanation: he ehe heh step by the thy