Answer:
A= -6
B= 6
C= 9
Step-by-step explanation:
To find the reciprocal, you just flip the fraction upside down, so it would be D
Answer:
it would be a
Step-by-step explanation:

has characteristic equation

which has roots at

. The negative root has multiplicity 2. So the general solution is
X is 12 and y is 15 because of 3,4,5 triangles