The answer to your problem is z=11
Answer:
or 
Step-by-step explanation:
The formula for finding the any side of the triangle is

We know that a=2 and c=11, so we can go ahead and plug those into the formula.


To find side b, we have to make it alone on one side. Subtract 4 on both side.

Now square root both sides, and that leaves us with:
or 
Answer:
1.300
Step-by-step explanation:
Question 4 is d question 3 is c