(40 points to best answer) ( asap)
what is the value of x?
enter your answer, as a decimal, in the box.

x=3.5

Step-by-step explanation:

We can use proportions to solve this problem.  Put the side of one triangle over the same side of the other triangle.

6           4.2

=

5           x

Using cross products

6x = 5*4.2

6x =21

Divide by 6

6x/6 = 21/6

x=3.5

c

-by-step explanation:

it would be c