I think you’re on the right track
Answer:
Step-by-step explanation:
angle at the center

Answer:
Step-by-step explanation:
√-80
Answer:
1.7 xy +2yx + 4xy +5 =13xy+5
2.5x^2 y+3xy^2+x^2 y==6x2y+3xy2
Step-by-step explanation:
For this case we have the following system of equations:

We can write a system of equivalent equations.
For this, it is enough to multiply one of the two equations by a scalar.
Multiplying the equation 1 by 2, we have:

Therefore, the new system of equations is:

Answer:
A system that is equivalent is:
D) 