What is the missing variable?

137°

Step-by-step explanation:

So, both are equal to each other due to them being the same degree angle.

5x + 7 = 8x - 71

subtract 5x on both sides

7 = 3x - 71

add 71 to both sides

7 + 71 = 3x - 71 + 71

78=3x

divide both sides by 3

78/3 = x

x = 26

insert x into the equations

5(26)+7°

= 137°

8(26)-71°

= 37°

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

answer: i wpould go with c

step-by-step explanation: