Answer:
19 1/2
Step-by-step explanation:
A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The correct option is A.
<h3>What is a triangle?</h3>
A triangle is a three-edged polygon with three vertices. It is a fundamental form in geometry. The sum of all the angles of a triangle is always equal to 180°.
The length of different sides are:



Since the length of all the sides of the triangle is not equal it is a scalene triangle.
Hence, the correct option is A.
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Answer:
1. 
2. 
3. 
Step-by-step explanation:
1. The word "of" means "to multiply" so it would be
which can also be written as
then you plus 7
2. this would be 1/3 times in parenthesis, g+8, and then added to 3c
3. this would be 1/6 times m, then plus 9