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Sliva [168]
3 years ago
8

An engine makes 4,800 revolutions in 12 minutes. At what rpm (revolutions per minute) is the engine rotating? 4,800 rpm 57,600 r

pm 24,000 rpm 400 rpm
Mathematics
1 answer:
tensa zangetsu [6.8K]3 years ago
5 0
It is rotatin at 400 rpm
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Methods including water divining, astrology, numerology, fortune telling, interpretation of dreams, and many other forms of divination, have been used for millennia to attempt to predict the future.

Step-by-step explanation:

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Which number is a solution of the inequality? 6>z(10-z)
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If 2x-10=4, what must x squelch to?
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A new phone costs $230 and the sales tax rate is 7%. What is the total cost of the camera after tax?
rosijanka [135]

That's a question about percentage.

One way to represent percentage is using decimal number. In this way, 1 is equivalent to 100% and the other less percentages using numbers between 0 and 1.

Examples:

  • 90% is equivalent to 0,90.
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  • 13.17% is equivalent to 0.1317.
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If we want to know the percentage of a number, we should multiplacate the number by the porcentage in the decimal number form.

Examples:

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In our problem, we have a phone with a increase of 7%. To solve that, it's important to perceive that $230 is equal to 100% and with a increase of 7%, we will pay 107%.

107% in the decimal number form is 1.07. With that information, we should multiplicate 1.07 by the original value and we will find the answer.

We know that 230\times 1.07 = 246.1, therefore, the total cost of the phone after tax is $246.1.

I hope I've helped. :D

Enjoy your studies. \o/

4 0
3 years ago
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