Answer:

Step-by-step explanation:
Given that the 2 triangles are congruent based on the Hypotenuse-leg theorem, this implies that:
, and
Using the expression,
, solve for y:



Answer:
33ft below sea level
Step-by-step explanation:
423-390=33ft
Point Slope:
y-12=-3(x-6)
From there you can find the slope intercept form:
y-12=-3x+18
y=-3x+30