Question

A fish is swimming 10.2 feet below the surface of the water. It then descends another 12.85 feet. What subtraction expression can be used to find the new position of the fish?

Answer 1

-10.2 - 12.85 which would be -23.05

the 10.2 is negative because it is below zero

Answer 2

The subtraction expression can be used to find the new position of the fish=-10.2-12.85.

Explanation:

Given

A fish swimming 10.2 feet below the surface of the water

fish swimming the distance in water=-10.2 feet

10.2 feet take negative because the fish swimming below the surface of the water.

Then , It descends the another distance in water=-12.85 feet

12.85 feet take also with negtaive sign because the fish moving in downward direction.

Now, the expression can be used to find the new position of the fish

= -10.2 + (-12.85)

The subtraction expression can be used to find the new position of the fish

=-10.2-12.85

By using the rule when positive number is multiplied by negative number then the answer is negative.

The new position of fish=-23.05 feet.