Use sigma notation to represent the sum of the first six terms of the following sequence: 4, 12, 20,
a] 6 over ∑ (n = 1) -4 + 8n
b] 6 over ∑ (n = 1) 4 + 8n (i think it is "b",
c] 6 over ∑ (n = 1) -1 + 8n
d] 6 over ∑ (n = 1) 1 + 8n

step-by-step explanation:

given that there are two triangles j'k'l' and jkl>

the former is got by dilating the second one.

when drawn on a grid, (graph paper) coordinates of vertices of first triangle is

(6,12)j, (9,6)k and (12,9)l

side jk has length = distance between j and k

=

side j'k'=distance between j' and k'

=

ie j'k'l' has sides 1/3 of that of corresponding sides of jkl.

hence scale factor of 1/3 is used to get j'k'l'from jkl

the answer is 13 cm

is there supposed to be a diagram or a graph for this one? ?

step-by-step explanation:

look at the picture i have filled out a table for it. hope this .