34. Selecciona las características corresponden a un polígono regular.
1. Tiene n-2 apotemas
2. Tiene n lados iguales
3. Tiene n-3 radios
4. Tiene n vértices
5. Tiene n ángulos iguales
6. Tiene un centro
7. Tiene lados más largos que otros
ΟΟΟΟ
A. 1, 2, 3 y 4
B. 1, 4,5 y 7
C. 2, 3, 6 y 7
D. 2, 4, 5 y 6

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

b) 1/3 * 1/5

step-by-step explanation:

each smallest part is 1/15 since the written one is 1/5 and it's divided by 3 equal parts. (1/5 )/3 = 1/15 = 1/3 * 1/5

a - base

b - exponent

so,

answer: the answer is fre sha voca do

step-by-step explanation: