If the plane is flying at an altitude of 21,000 feet, it is perpendicular to the observer's horizontal line of sight. Thus, I concluded that the given information be assigned to the attachment below.
Given -
( Observer at point O, plane flying at point P
( Plane at 55° angle to horizontal line of sight, altitude of 21,000 feet
The distance ( x ), is represented by the line segment OP, with which we have to determine the length of. Therefore we can conclude the following -
<u><em>As you can see, the distance from the plane to the observer is about 25,636 ft!</em></u>
P = A(1+r)^x
where P is the population at time x
A is the initial population and r is the growth/decay rate. Growth will be +positive r number added to the 1. Where as decay subtracts r. So any answers that are > than 1 which is answers A and B.
The expression 3 + x = 11 is an equivalent equation of a model
The solution to the equation is x = 8
<h3>How to solve the equation</h3>
The equation is given as:
3 + x = 11
Subtract 3 from both sides of the equations
-3 + 3 + x = -3 + 11
Evaluate the expression on the right-hand side
-3 + 3 + x = 8
Evaluate the expression on the left-hand side
x = 8
Hence, the solution to the equation is x = 8
Read more about equations at:
brainly.com/question/4344214
3 over 8 plus 2 over 3 plus 1 over 3 = 11 over 8 or 1.375