A wheel of radius 10 cm is turning at a rate of 5 revolutions per minute. Calculate : the angle subtended at the centre by the minor arc.

Answer and Explanation: (P.S. If this helps you please help me by following me on IG: anxme.vxbez)

When the wheel rotates one revolution the point of the rim will travel a distance which is equal to circumference of the wheel circle.

Distance travel for one revolution = 2pir

Distance travel for one revolution = 2pixx10 = 20picm

The wheel rotates 5 revolutions per minute. So the distance travel by the point will be 20pixx5 = 100pi .

For one minute(60 seconds) the point travels 100picm distance.

So distance travelled in 2 seconds = 100pixx2/60 = 10.47cm

So the answer is 10.47cm.

Note:

Here we have to assume that the wheel rotates at a constant speed.

let x be the money she spent so that she can earn the free t-shirt.

since, she already spent $112.49

⇒

also, as per the statement: jennifer must spend $250 or more in order to qualify for a free t-shirt at the store.

then,

we have an inequality i.,e

subtract 112.49 from both sides we get;

therefore, $137. 51 more money does jennifer need to spend so that she can earn the free t-shirt

1/3 + 1/5 = 8/15.

step-by-step explanation:

hope it