An airplane descends 1.9 miles to an elevation of 7.05 miles. Find the elevation of the plane before its descent. What is the initial elevation of the plane?

Just help pls

Just help pls

1 Answer
Write your answer here...
Start with a one sentence answer
Then teach the underlying concepts
Don't copy without citing sources
preview
?

Answer

Write a one sentence answer...

Answer:

Explanation

Explain in detail...

Explanation:

I want someone to double check my answer

Describe your changes (optional) 200

1
Feb 8, 2018

Answer:

See a solution process below:

Explanation:

The formula for calculating change in elevation is:

#s + c = e#

Where,

#s# is the starting elevation: what we are solving for in this problem.

#c# is the change in elevation: -1.9 miles for this problem. It is a negative number because we are told the airplane descends.

#e# is the ending elevation: 7.05 miles for this problem.

Substituting and solving for #s# gives:

#s + (-1.9" miles") = 7.05" miles"#

#s - 1.9" miles" = 7.05" miles"#

#s - 1.9" miles" + color(red)(1.9" miles") = 7.05" miles" + color(red)(1.9" miles")#

#s - 0 = (7.05 + color(red)(1.9))" miles"#

#s = 8.95" miles"#

The airplanes initial elevation was 8.95 miles.

Was this helpful? Let the contributor know!
1500