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.)..

Lake Segundo is 5/6 * 84 feet = <<5/6*84=70>>70 feet deep.

Since it is below sea level, the elevation at the bottom of Lake Segundo is -70 feet. Answer: \boxed{-70}.

To find the elevation at the bottom of Lake Segundo, we need to calculate 5/6 of the depth of Lake Profondo.

The depth of Lake Segundo can be found by multiplying the depth of Lake Profondo by 5/6:

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

To account for the elevation below sea level, we can consider the depth as a negative value.

Therefore, the elevation at the bottom of Lake Segundo is - (5/6) * 84 feet.

To find the elevation at the bottom of Lake Segundo, we need to calculate 5/6 of the depth of Lake Profondo. Let's break down the steps:

1. Start with the given depth of Lake Profondo: 84 feet.
2. Multiply the depth of Lake Profondo by 5/6: 84 * 5/6 = 70 feet.

So, the elevation at the bottom of Lake Segundo is 70 feet below sea level.