19. Write an expression that represents the
perimeter of the figure below

P = 8n +12

Step-by-step explanation:

The lines on the sides are saying all 4 sides are equal

The perimeter is the sum of all 4 sides,but since they are the same

P = 4s where s is the side length of one of the sides

P = 4( 2n+3)

Distribute

P = 8n +12

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,

25

step-by-step explanation: