In the equation P1V1=P2V2 what do the numbers mean?

1 is the lowest and 2 is the highest

1 is the starting and 2 is the ending

they tell you how much pressure and volume there is

They don't mean anything

1 is the starting and 2 is the ending

Explanation:

The numbers in this problem tells us the starting amount and ending value.

This equation:

         P V    =   P  V

is one of the gas laws. Particularly, this is called Boyle's law. The law relates volume to pressure.

Here is the postulate "The volume of a fixed mass of gas is inversely proportional to the pressure provided that temperature is constant".

  P V    =   P  V

P₁ is the starting pressure

P₂ is the ending pressure

V₁ is the volume at starting pressure

V₂ is the volume at ending pressure

find the surface area of the sphere to the nearest square unit. use a calculator.

a. 254 in.2

b. 64 in.2

c. 127 in.2

d. 1,018 in.2

pythagoras' theorem

square root (-5^2+9^2)

square root (25+81)

square root (106)

angle is tan^-1(9/5)

neg x, pos y