The volume of a gas "V" varies inversely with the pressure "P" put on it. If the volume is 360cm³ under a pressure of 20 kgcm2
, then what pressure is needed for it to have a volume of 480cm³?

15 Kg cm²

Step-by-step explanation:

Given that V varies inversely with P then the equation relating them is

V = ← k is the constant of variation

To find k use the condition

V = 360, P = 20, then

360 = ( multiply both sides by 20 )

k = 7200

V = ← equation of variation

When V = 480, then

480 = ( multiply both sides by P )

480P = 7200 ( divide both sides by 480 )

P = 15

-3

step-by-step explanation:

a drawing really does here:

so i draw the horizontal line y=2 and the vertical line x=-2 at this intersection i put b (this is where my right angle is going to be).   so point b is at (-2,2).   point a is 5 units long and is also on y=2 so this point has to be (3,2) or (-7,2) -doesn't matter i will go with (3,2).

now we know c is at (-2,y) we don't know the y yet bet we know that c is on x=-2.

we have the area of the triangle is .5bh=12.5

we know the base length is 5 (ab)

we have the height is (2-y) if you look at your

plug in

.5(5)(2-y)=12.5

solve for y to get the y-coordinate for c

2.5(2-y)=12.5

divide both sides by 2.5 giving:

2-y=5

now subtract 2 on both sides

-y=3

y=-3

uhhh idk u yolo?