ANSWER
EXPLANATION
The given equations are:
and
Make x the subject of the second equation;
Put equation (3) into equation (1).
Put y=-2 into equation (3) to get,
Therefore the solution is
Checking for equation (1)
This is true.
Checking for equation (2)
Answer: 20 Decibels
Step-by-step explanation:
I don't know
Answer:
ABC is isosceles
It means that the two vectors are perpendicular or orthogonal
aa is the repuestos yes ok