Answer:
9.3 centimeters
Step-by-step explanation:
If the length of the third side of the triangle is c, then according to the Law of Cosines, c2 = 72 + 132 – 2(7)(13)(cos 44°). The value of c2 can be simplified to approximately 49 + 169 – 130.9198, or 87.0802, using a calculator. By taking the square root of 87.0802, the length of the third side of the triangle comes out to be approximately 9.3 centimeters.
It is A and B I think hope it helps
For this case we have to:
Given the quadratic equation of the form:
The roots are given by:
If we have: 
We can rewrite it in the following way:
Where:
Where we have:
By definition: 
Thus, the roots are given by imaginary numbers:
Answer:
Answer:
or 
Step-by-step explanation:
