The opposite angles of a quadrilateral are supplementary so you can set them equal to 180.
If there was more information given then i could find the exact values.
Hope this helps :)
Answer: 3/2
Step-by-step explanation:
3/10 * 5
3/10 * 5/1
this can be simplified, the 5 cancels out and the 10 becomes a 2
3/2*1/1 = 3/2