Answer:
first one is 5.8
second on is 4.47 round
third one is 1.92
Step-by-step explanation:
Answer:
63*
Step-by-step explanation:
The first thing you need to do is find the value of x. What I did for this was trial and error. I tried a number, and if it was too big, I tried a smaller one. If you add up all of the angles, it should equal up to 180*, so I kept on doing this until I added up to 180.
The answer I got was x=8, so I plugged this into the equation for A and solved. 9x8 is 72, and 72-9 is 63.
Therefore, 63 is the correct answer.
Step-by-step explanation:
The given equation is 
Let 
be the coefficient of 
Let 
be the coefficient of 
Let 
be the constant.
Then the roots α,β for the equation 
are 
So,α=
β=
.
So the roots are 
