Question

Scientists on a submarine are investigating Earth's magnetic field.
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

it is a subtraction.
\[-180\frac{4}{7}-(-116\frac{2}{7}) \]

Answer 2

Thanks @lochana

Answer 3

you are welcome