Plese help . In which quadrant does (3, 5) (-2,-6) (3,-8) and (-5.4) belongs? 2. Find the distance of (3, 5) and (5,-1)
3. If A= (3, 3)B(6,0) C(3,-3) Prove AB =BC
4.show that A(-2,3)B(3,8) C(4,1) are the vertices of isoseles triangle
5.the vertices of triangle are A(2,3)B(7,0) C(4,-1) find length of AB ,BC, AC and state what types of triangle is this.
6.prove (1,0)(2,1) (3,0) are vertices of right angle triangle
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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: procent 54 wynosi 33,33%

college

vwhat effect does the word head have on the meaning of this passage?

a. it demonstrates how intelligent he was.

b. it shows he was a favorite of the teachers.

c. it indicates he would be a good preacher.

d. it reveals how self-important he was.

how does the choice of the word head contribute to the passage’s tone?

a. it offers a sense of entitlement.

step-by-step explanation: