Vita wants to center a towel bar on her door that is 27 inches wide.
she determines that the distance from each end of the towel bar to the
end of the door is 9 inches. write and solve an equation to find the length
of the towel bar.
what’s the answer?

27-(2·9)=9 inches

Step-by-step explanation:

the door is 27 inches wide, and the distance from each end of the towel bar to the  end of the door is 9 inches, so the towel bar would take up all of the door except the 2·9 inches, so the equation is 27-(2·9)=9 in

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,