Find an ordered pair (x, y) that is a solution to the equation.
3x-y=5

(2,1) is an example of an ordered pair that is a solution to the equation.

Step-by-step explanation:

We are given the following equation:

Finding a solution:

To find an ordered pair (x,y) that is a solution to this equation, first we attribute a value to one of the variables, and then replace in the equation and find the other.

I am going to attribute

So

(2,1) is an example of an ordered pair that is a solution to the equation.

answer:  

step-by-step explanation:

here x represents the height of the pole,

and, the height of the shadow of the pole is 12 feet.

also, the angle of elevation from the top of the pole is 40°,

therefore,

by the low of sine,

which is the required equation for finding the value of x,