Answer:
• Apply additional property of equality:
• Apply cross multiplication, multiply either sides by -3:
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Answer:
The change in elevation is 20,744 ft
Step-by-step explanation:
Let
x -----> the lowest elevation in a region
y -----> the highest elevation in a region
we have that
x=-264 ft
y=+20,480 ft
We know that
To find out the change in elevation from the lowest elevation to the highest elevation, subtract the lowest elevation from the highest elevation (or find the difference in absolute value)
so
y-x
substitute the values