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E.
2. 7.EE.2.3
Damien has $25 he can spend on art
supplies. The table shows some items he
would like to buy.
Item
Cost
Brush
$2.40
Pad of paper
$5.25
Pastel crayon
$3.97
Watercolor paint $2.75
5. 7.6.1.3
The figu
length 6
Select a combination of supplies Damien
could buy for $25 or less. Select all that
apply.
0 A. 1 pad of paper and 5 pastel
crayons
B. 2 brushes and 7 watercolor paints
OC. 2 pads of paper and 6 brushes
OD. 3 pastel crayons and 4 watercolor
paints
E. 2 pads of paper and 6 watercolor
paints
Dray
the
+

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

answer: it's d

step-by-step explanation:

b

step-by-step explanation:

true. i hope this ! go answer some of my newest