Question

Help pls answer all i will give the first person to get them all correct Brainliest !!!


1.) A submarine is 1/5 mile below the ocean surface. The submarine descends another 1/2 mile. What rational number represents the submarines new location after descending?
A.) - 7/10
B.) 2/7
C.) - 2/7
D.) 7/10

2.) A research team aboard an underwear vessel was 4 1/2 feet beneath the surface of the water. The vessel rose 1 2/3 feet. Which rational number represents where the vessel is currently located?
A.) -6 1/6
B.) 6 1/6
C.) -2 5/6
D.) 2 5/6

3.) Ava's Road Paving Company mixed 2 2/3 tons of cement. They used 1 1/5 tons to pave a street downtown. How much cement did they have left?
A.) 3 13/15 tons
B.) 1 7/15 tons
C.) 1 1/5 tons
D.) 1 1/2 tons

Answer 1

Question 1:

We are going to add.

1/5 + 1/2

2/10 + 5/10

7/10

Note that we are going DOWN so the number will be negative.

Therefore, the answer is A.) -7/10

Question 2:

We are going to subtract.

4 1/2 - 1 2/3

9/2 - 5/3

27/6 - 10/6

17/6 or 2 5/6

Note that we are still BELOW sea level so the number will be negative.

Therefore, the answer is C.) -2 5/6

Question 3:

We are going to subtract.

2 2/3 - 1 1/5

8/3 - 6/5

40/15 - 18/15

22/15 or 1 7/15

Therefore, the answer is B.) 1 7/15

Best of Luck!