Complete data chart. a 85, 65, 95, 100, 90, 95, 86
b 180, 165, 160, 171, 173, 165
C 120, 130, 160, 120, 150, 160

A:

Mean - 66 Median - 90 Mode - 95 Range - 45

B:

Mean - 169 Median - 168 Mode - 165 Range - 20

C:

Mean - 140 Median - 140 Mode - 120 & 160 Range - 40

by definition, an arc subtended by a central angle of some given measure has the same measure. so .

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