Question 7 of 15 Miguel Is reflecting a point (-5, 7) across the lines y = x, y = -x. y=0, and I = 0. let Q' be the image of
Qarze
after each
reflection
Which statements are true? Select all that apply.
For y=x, the image of point Q will be Q'[(7,5))
For x=0, the image of point Q will be Q1/5, 7)).
Asses
For y=x, the image of point Q will be Q'UZ. -5)).
For y=-x, the image of point Q will be Q'((5.7)).
Stand
For y=0, the image of point Q will be Q'l(-5, -7)).
GO BACK
SUBMIT AND CONTINUE

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

step-by-step explanation:

i believe its "c" because all of the other options include a but it could be d because there is a way of financing with cash at certain places but its uncommon.

answer: it's d

step-by-step explanation: