Question

The submarine is at a depth of -116 2/7 feet when the scientists detect a signal frequency from the ocean floor. They dive farther down to a depth of -180 4/7 feet to check the signal. The net change in their elevation is_____feet.

Answer 1

Answer:

-64 2/7

Step-by-step explanation:

Answer 2

Answer: $-64\frac{2}{7}\text{ feet}$

Step-by-step explanation:

When the scientists detect a signal frequency from the ocean floor, then the depth of submarine =$-116\frac{2}{7}$ feet

=$-\frac{814}{7}$ feet

When they dive farther to check the signal, then the depth of the submarine=$-180\frac{4}{7}=-\frac{1264}{7}$ feet.

The net change in their elevation =$-\frac{1264}{7}-(-\frac{814}{7})$

$=-\frac{1264}{7}+\frac{814}{7}\\=-\frac{450}{7}=-64\frac{2}{7}\text{ feet}$