Step-by-step explanation:
1/5x-12=0
1/75-12=0
1-900=-899/75
ans=11.99
Answer:
perimeter of a square= 4 times square root of area

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