Answer:
18
Step-by-step explanation:
Josh is incorrect, he did not examine the expression correctly, therefore his answer was wrong.
Answer:
wheres the diagram..?
Step-by-step explanation:
..i think you forgot the diagram lol
Answer:
no
Step-by-step explanation:
The sum of the lengths of any two sides of a triangle is greater than the length of the third side.
9+10 > 21
19 >21
This is not true so it cannot make a triangle