Lake profondo has a depth of 84 feet. Lake Segundo is 5/6 as deep. What is the elevation at the bottom of Lake Segundo? Remember the elevation is below sea level. Account for this in your answer.

Since Lake Profondo has a depth of 84 feet, Lake Segundo is 5/6 * 84 feet = <<5/6*84=70>>70 feet deep.

In terms of elevation below sea level, the elevation at the bottom of Lake Segundo is -70 feet.

To find the depth of Lake Segundo, which is 5/6 as deep as Lake Profondo, we simply multiply the depth of Lake Profondo by 5/6.

Depth of Lake Segundo = Depth of Lake Profondo * (5/6)

Depth of Lake Segundo = 84 feet * (5/6)

Depth of Lake Segundo = 70 feet

However, in the question, it is mentioned that the elevation is below sea level. This means we need to consider the depth as a negative value to account for being below sea level.

So, the elevation at the bottom of Lake Segundo is -70 feet.