This is the solution to your question.
Answer:
The answer is a unique triangle.
Step-by-step explanation:
9+7=16, 16 is less than 18.
If two sides are added up and equal or are less than the third side, they are a unique triangle.
Answer:
If C is 5 and B is 7 the a is 9
The two numbers are 0.85 and 0.15
if you add them together you get 1, 0.85+0.15=1
and if you subtract them you get 0.7, 0.85-0.15=0.7
Real numbers. Others contain fractions and decimals which are breaking down a whole. Real numbers are 1 whole. Hope this helps (Hope i get brainliest to!)