Adisc spins at a rate of 6.4 revolutions per minute. to the nearest tenth, what is the linear velocity, in meters per minute, of a point on the disc that is 3 cm from the center of the disc? m/min

1.2 m/min

Step-by-step explanation:

First step, calculate the circumference of the 3 cm circle where the point is located.  We don't care how big the disc is, we only care about the position of the point, and we'll consider this is a disc in itself.

So, circumference of a circle is: C = 2πR = 2 * π * 3 = 6π = 18.85 cm

Now, the disc spins at 6.4 revolutions per minute... that means that in a minute, the dot will have done 6.4 times 18.85 cm.

Total distance / minute = 18.85 cm/rotation * 6.4 rotation/min = 120.64 cm/min

Now, we have to convert that into m/min... which is easy... since just have to divide by 100 (100 cm in a meter), and round it to the nearest tenth:

So, answer is 1.2064 m/min = 1.2 m/min

use an equation of ratios to determine the amount of gas needed to fill the tank.

    0.2             0.8

  =    

288.75             x

                                                              231 gal

so, 0.2x = (0.8)(288.75 gal), and x = = 1155 gal.

                                                                0.2

it would take 1155 gal. to fill the tank.

the cost would be

1155 gal         $3

* = $3465   (answer)

      1           1 gal

hope this you

she would want to sell 10 full-year subscriptions and at least 9 half-year subscriptions to get a total of at least $300. 

i hope this answer you! if you have any further questions or concerns, feel free to ask! : )

step-by-step explanation:

mark brainliest!