Which real-world story is represented by the addition problem (-2) + (-3) = - 5?

A. A submarine descended 2 miles and then descended another 3 miles. The submarine is now 5 miles below its original location.

B. A submarine ascended 2 miles and then descended another 3 miles. The submarine is now mile below its original location.

C. A submarine descended 2 miles and then ascended another 3 miles. The submarine is now mile above its original location.

D. A submarine ascended 2 miles and then ascended another 3 miles. The submarine is now 5 miles above its original location.

Question

Mathematics

Juliana Rowland

31 July, 01:01

Which real-world story is represented by the addition problem (-2) + (-3) = - 5?

A. A submarine descended 2 miles and then descended another 3 miles. The submarine is now 5 miles below its original location.

B. A submarine ascended 2 miles and then descended another 3 miles. The submarine is now mile below its original location.

C. A submarine descended 2 miles and then ascended another 3 miles. The submarine is now mile above its original location.

D. A submarine ascended 2 miles and then ascended another 3 miles. The submarine is now 5 miles above its original location.

+5

Answers (1)

Know the Answer?

Kylie Russell · Answer 1

The answer is A.

If the submarine descended then it went below, and if it ascended it went above. Therefore:

"Descended 2 miles" = - 2

"Then descended another 3 miles" = - 3

(-2) + (-3) = -5

Adding two negatives together will give you a bigger negative so the submarine would then be 5 miles below its original location.