Awheel makes 20 revolutions per minute. find the angular velocity. 10π rad/min 20π rad/min 40π rad/min

Angular velocity of a wheel which makes 20 revolutions per minute is 40π rad/min

Step-by-step explanation:

Angular velocity, ω = 2πf , where f is the frequency.

Here frequency, f = 20 revolutions per minute

Substituting frequency value in angular velocity equation,

Angular velocity, ω = 2πf = 2 x π x 20 = 40π rad/min

So angular velocity of a wheel which makes 20 revolutions per minute is 40π rad/min

mr. flanders’ class sold 47 doughnuts and   mr. rodriquez’s class sold 38 cartons of milk

step-by-step explanation:

let x be the number of doughnuts sold by mr. flanders’ class and y be the number of cartons sold by mr. rodriquez’s class.

1. together, the classes sold 85 items, then

x+y=85.

2. both classes earn earned $104.49 for their school. if doughnuts were sold for $1.35 each, then x doughnuts costed $1.35x. if cartons of milk were sold for $1.08 each, then y cartons costed $1.08y. hence,

1.35x+1.08y=104.49.

3. solve the system of two equations: