Question

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

The submarine is at a depth of feet when the scientists detect a signal frequency from the ocean floor. They dive farther down to a depth of feet to check the signal. The net change in their depth is
feet.

Answer 1

-64 2/7 for PLATO users.

Explanation:

The other guy was right, but he didn't put the negative sign because it was a net value.

Answer 2

Net_change_in_depth = 450/7 ft = 64 2/7 ft

Explanation:

Missing info attached below

Depth_of_the_frequency_signal = -180 4/7 ft = -1264/7 ft

Depth_of_the_submarine = -116 2/7 ft = -814/7 ft

Net_change_in_depth =

Depth_of_the_submarine - Depth_of_the_frequency_signal

Net_change_in_depth = -814/7 ft - (-1264/7 ft)

Net_change_in_depth = 450/7 ft = 64 2/7 ft