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
The axis of symmetry is x = -5
Answer: B 56
Step-by-step explanation:
Answer:
44.58
Step-by-step explanation:

Answer:
2.5 gallons of the 20% solution must be replaced by the 36% solution.
Step-by-step explanation:





