Adeep-sea diver explores fish at an elevation of -20.5 feet. then the diver descends 60.5 feet the elevation of the top of the coral reef. what is the elevation of the top of the coral reef?

This problem can be solved simply by subtracting 60.5 from -20.5 because the diver started at -20.5 ft and then descended another 60.5 ft.  Since, we are subtracting a number from a negative number, that means that the answer will too be negative.

-20.5-60.5=-81

The elevation of the top of the coral reef is -81 ft.

Hope this helps!

the transverse axis of a hyperbola is the line that contains the two vertices and the two focuses.

in this example (hyperbola of equation x^2/2 - y^2/4 = 1), the transverse axis is the  x-axis  . 

step-by-step explanation: