1. -12 x -9 = * 2. +16 x -12 = *
3. 16 x 8 = *
4. -15 x -9 = *
5. -20 x 10 = *
help po

-18

step-by-step explanation:

because mean value defines that total sum value over total number of set

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