Which equation can be used to find the answer? A playground with four sides has a perimeter of 73 ft. Three of the sides have lengths of 14 ft, 19 ft, and 25 ft. What is the length of the fourth side?

s – 14 + 19 + 25 = 73

s – 73 = 14 + 19 – 25

s + 14 + 19 + 25 = 73

s – 14 – 19 – 25 = 73

Considering that perimeter in the sum of all sides, we have:

Once the perimeter is 73 ft and tree of the sides were given:

The correct equation is:

Also,

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,

the answer is d

the answer is in the first quadrant, which make the y-int positive.

since the dots are going down, therefore the correlation is negative

i hope it is right.