19^2 = 361
7^2 = 49
361 - 49 = 312
Square root of 312 = 17.66
B) 17.7
Answer:
60
Step-by-step explanation:
these are alternate angles between two parallel lines.
which means that 120=2x
so u can calculate the value of x through this equation.
120=2x
120/2=x=60
The two lines are parallel with each other ( they have the same slope) so they will never cross.
This means there are 0 solutions.
The answer is A.