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Brut [27]
3 years ago
6

An elevator starts on the 100th floor. It descends 4 floors every 10 seconds. At what floor will the elevator be 60 seconds afte

r it starts?
Mathematics
2 answers:
Artyom0805 [142]3 years ago
8 0
So is 4 floors / 10 seconds
If you have 60 seconds you can multiple 10 by 6 because 10×6=60
so you also have to multiple 4 by 6
4×6=24
and because it's descending it's 100-24= 76
larisa [96]3 years ago
4 0
It would be at the 76th floor because 10 seconds times 6 seconds is equivalent to 60 seconds. So you would also multiply the 4 floors by 6 to get 24. You would finally subtract 100 an 24 to get the 76th floor. Hopes this makes sense, and I hoped this helped!
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madreJ [45]

Answer is..

5.88%

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4 0
2 years ago
If the current in a circuit is 2 +j2 amps and the resistance is 3-j2 ohms, what is the voltage
victus00 [196]

Answer:

The voltage is 10 + 2j volts.

Step-by-step explanation:

Ohm's first law:

By Ohm's first law, the voltage is the multiplication of the current by the resistance, that is:

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The voltage is measured in Volts, the current in amps and the resistance in ohms.

In this question:

Both the current and the resistance have complex parts. We have to know that:

j^{2} = -1

We have that:

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Then

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V = 6 + 6j - 4j - 4j^{2}

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V = 10 + 2j

The voltage is 10 + 2j volts.

4 0
3 years ago
clara wants to run a total of 5 1/2 miles each lap around the track is 0.25 miles. how many laps around the track does clara nee
NemiM [27]

Answer:

22 laps

Step-by-step explanation:

Clara wants to run 5 1/2 miles, and the track is only 0.25 miles long. This is a fairly easy question, you just need to figure out how many times 5 1/2 goes into 0.25, because she wants to run that amount of miles (I could never run that much).

I hope that answers your question so you understand, and I hope you have a great rest of your day! :)

5 0
3 years ago
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