a diver's elevation is -30 feet relative to sea level. she dives down 12 feet. what is her elevation after the dive?
a. 12 feet b. 18 feet
c. -30 feet d. -42 feet
If the diver were 30 feet below sea level and she went down another 12 feet then she must be 42 feet below sea level. That makes it -42 feet.
-42
To find the diver's elevation after the dive, we need to subtract the depth of her dive from her initial elevation.
Her initial elevation is -30 feet relative to sea level, and she dives down 12 feet.
To subtract 12 feet from -30 feet, we perform the calculation: -30 - 12 = -42 feet.
Therefore, her elevation after the dive is -42 feet.
So, the correct answer is option d. -42 feet.
To find the diver's elevation after the dive, we need to add the change in elevation to her initial elevation.
The diver's initial elevation is -30 feet relative to sea level. She then dives down 12 feet.
If we add -30 feet (initial elevation) and -12 feet (change in elevation), we get:
-30 feet + (-12 feet) = -42 feet
Therefore, the diver's elevation after the dive is -42 feet.
So, the correct answer is d. -42 feet.