Step-by-step explanation:
There is a rule that if c^2 > a^2 + b^2, then it is an obtuse triangle.
*c is the longest side
I attached more information on it below.
Answer:

Step-by-step explanation:
The inequality includes -53.
The interval notation is 

I put .2 into a fraction and i got 5 17/40. 2/10 equals to 1/5 and 5/8 and 1/5 LCD is 40. I subtracted them and got 5 17/40.
Answer:
2a(squared) + 3a + 8
Step-by-step explanation: