2 years ago

tell me how to answer this please I WILL MARK BRAINLIEST

Mathematics

1 answer:

iogann1982 [59]2 years ago

7 0

Answer:

It equals 3

Step-by-step explanation:

To solve this it is basically like a normal problem you would just take out the X in it and divide 7 by 21 which leaves you with 3.

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A car is traveling at 47 mph. If its tires have a diameter of 27 inches, how fast are the car's tires turning? Express the answe

Amiraneli [1.4K]

Answer:

3676.44 rad/min

Step-by-step explanation:

It is a problem about the angular speed of the car's wheel.

You can calculate the angular speed by using the following formula, which relates the tangential speed of the wheels (the same as the speed of the car) with the angular speed:

$\omega=\frac{v}{r}$ ( 1 )

v: speed of the car = tangential speed of the wheels = 47mph

r: radius of the wheels = 27/2 in = 13.5 in

you change the units of the speed:

$47mph*\frac{63360in}{1mille}*\frac{1h}{60min}=49632\frac{in}{min}$

next, you replace the values of v and r in the equation (1):

$\omega=\frac{v}{r}=\frac{49632in/min}{13.5in}=3676.44\frac{rad}{min}$

Then, the car's tires are turning with an angular speed of 3676.44 rad/min

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3 years ago

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Naily [24]

Answer:

4/12??

Step-by-step explanation:

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3 years ago

X - 150 = y x - y = 50 x + y = 180 x = y + 60 what is x?

Murrr4er [49]

It is y=x-150 because x−150+150=y+150

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A baker took 9 hours to bake 6 cakes how long does it take him to bake 1 cake?

AlexFokin [52]

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Step-by-step explanation:

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3 years ago

What is the domain of the graph shown? D:

RUDIKE [14]

left to right so -infinity, 3

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3 years ago

Read 2 more answers

￼ tell me how to answer this please I WILL MARK BRAINLIEST

tell me how to answer this please I WILL MARK BRAINLIEST