The vertices of the rectangle: A(5,1),A(5, 1),A(5,1),A, left parenthesis, 5, comma, 1, right parenthesis, comma B(7,1)B(7,1)B(7,1)B, left parenthesis, 7, comma, 1, right parenthesis, C(7,6)C(7, 6)C(7,6)C, left parenthesis, 7, comma, 6, right parenthesis, and D(5,6)D(5, 6)D(5,6)D, left parenthesis, 5, comma, 6, right parenthesis. What si the perimater

y = 0.77(x)

step-by-step explanation:

the jacket retains this value after 23% cut or retains 77% of original value. plug original 87 jacket price for x and the remaining value should be y.

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

i need more details sorry

step-by-step explanation: