ElectricPavlov

Volume(n) = Volume(0) + Volume(0) (2/25)(tf - t0)  =

                  22 + 22(2/25)(tf-t0) = 22 (1 +2/25(tf-t0))

         IF the volume of gas increases by a FACTOR of 2/25     Volume(n) = new volume  V(0)= original volume= 22    tf=final temp in degrees C  t0 = original temp in C

If the volume only increases by 2/25 liter for each degree (NOT a FACTOR)

Volume(n) = 22 + (2/25)(tf-t0)   

I do not think there is an answer to this.

x = 4 +y    substitute this into the second equation:  y = 3 + x  

    then  y = 3 + (4+y) 

   then y = y +7       

  then   0 = 7     INVALID !     

Are you sure you wrote the equations in your question correctly??

4/3 pi r^3       r^3   NOT r^2

4/3 pi (.5)^3 =   your answer......just use the calculator

You'll have to give more information......either the horizontal distance the ramp covers or the actual length of the ramp to get a numerical answer to this.....

There are 2pi radians in 360 degrees

1:20 to 1:55 is 35 minutes     35 minutes out of 60 (which is a complete rotation)     35/60 x 2pi = 1.16 pi radians = 3.665 radians

Raise each side to 10^x   power:  i.e.

10^(log x+5) = 10^(-1)

x+5 = .1

x= -4.9             

Length (across the front)  x Width (distance from front to back) = area of base....        if a regular rectangular shaped aquarium.

Room size is  15/3  x  12/3   sq yards = 20 sq yards     20 sq yrds x $22/sq yrd = 440 dollars

I will assume you metric tonnes = 1000kg         8 x 1000 = 8000 kg capacity for the van     8000/1.25 = 6400 tiles max on the van

Via interpolation     5.5