determine the value of x for which r ∥ s if?

m∠1 = 60 – 2x; and
m∠2 = 70 – 4x.

10

5

50

4

Step-by-step explanation:

m∠1 = m∠2            {r ║s , so, corresponding angles are equal}

60 – 2x  =  70 – 4x

  4x - 2x = 70 -60

         2x = 10

           x = 10/2

           x = 5

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