SOLUTION: I have no idea how to solve this problem! The pressure at a certain depth in the ocean can be approximated by the equation P = 15 + 1/2 D, where P is the pressure in pounds per

Question 15888: I have no idea how to solve this problem!
The pressure at a certain depth in the ocean can be approximated by the equation P = 15 + 1/2 D, where P is the pressure in pounds per square inch and D is the depth in feet. Use this equation to find the depth when the pressure is 40 lb/in^.
Found 2 solutions by venugopalramana, pwac:
Answer by venugopalramana(3286) (Show Source):
You can put this solution on YOUR website!
, where P is the pressure in pounds per square inch and D is the depth in feet. Use this equation to find the depth when the pressure is 40 lb/in^.
to get the depth ,we have to substitute the value of pressure in the given equation
40 = 15+(1/2)*D
(1/2)*D =40-15 = 25
D = 25*2 =50
D = 50 feet

Answer by pwac(253) (Show Source):
You can put this solution on YOUR website!
Put given figures into equation:
40=15+D/2 subtract 15 from both sides(D/2 is same as1/2D)
25=D/2 multiply both sides by 2 to get
50=D so Depth is 50 feet
check by putting in original equation
Pete