Question

(40 points to best answer) (help ASAP)

What is the value of x?
Enter your answer, as a decimal, in the box.

Answer 1

x=3.5

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