Solve the system of equations using substitution.
y = x + 6
y = –2x – 3

Enter the number of complex zeros for the polynomial function in the box. f(x) = x+ + 5x² +6

Aman is 6 feet 3 inches tall. the top of his shadow touches a fire hydrant that is 13 feet 6 inches away. what is the angle of elevation from the base of the fire hydrant to the top of the man's head?

This is about circle theorems. someone asap : (