Answer:
[tex]d=2,760\ ft[/tex]
Step-by-step explanation:
Let
x ----> the height of the top of a mountain above sea level
y ----> the deep of a shipwreck below the sea level
we know that
The sea level represent the height equal to zero
In this problem we have
[tex]x=2,450\ ft[/tex] ---> is positive because is above sea level
[tex]y=-310\ ft[/tex] ---> is negative because is below sea level
To find out the distance between the mountain top and the ship wreck, determine the absolute value of the difference between the two values
[tex]d=\left|x-y\right|[/tex]
substitute the values
[tex]d=\left|2,450-(-310)\right|[/tex]
[tex]d=\left|2,450+310\right|[/tex]
[tex]d=\left|2,760\right|[/tex]
[tex]d=2,760\ ft[/tex]
