Subtract and reduce to lowest terms: 4 1/7 - 2 4/7

1. 11/7
2. 2 3/7
3. 1 4/7
4. none of these are correct

Step-by-step explanation:

Both terms have the same denominator, 7.  So combining them is relatively easy.  Rewrite 2 4/7 as 18/7 and then subtract 18/7 from 1/7:

1/7 - 18/7 = -17/7

Choose Answer 4:  None of these are correct.

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

b, i believe, but not sure.