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liraira [26]
2 years ago
13

3) Barbara can walk 3,200 meters in 24 minutes. How far can she walk in 3

Mathematics
1 answer:
slava [35]2 years ago
6 0

Answer:

400 meters

Step-by-step explanation:

We know that Barbara can walk 3,200 meters in 24 minutes . And are being asked to see how far she can walk in 3 minutes.

Create the unit rate. Since Barbara can walk 3,200 in 24 minutes and we're trying to figure out how many meters she walks in 3 mintues, make the meters "M"

\frac{3200}{24} = \frac{M}{3}

Let's do something that can make 24 mintues go to 3 minutes, this would be dividing 24 by 8, do the same with the numerator :

\frac{3200/8}{24/8}

\frac{400}{3}

Therefore Barbara can walk 400 meters in 3 minutes,

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Alja [10]

None of the given choices is the correct solution. 

The setup of the problem is a correct, if somewhat weird, description
of the ideal gas laws, but the temperature involved in the law is the
ABSOLUTE temperature, NOT the Celsius or Fahrenheit one, or
any other scale where 'zero' is not 'Absolute Zero'.

Zero Celsius is (about) 273 Celsius-size degrees above Absolute Zero. 
So the original temperature of the gas is  (273 + 2.5) = 275.5 Kelvins
(Celsius degrees above absolute zero).  THAT's the temperature that's
going to change in inverse proportion to the volume.
(if the pressure doesn't change)

The volume has been multiplied by  100cm³/500cm³ = 1/5 .

Since the temperature changes inversely, it will be multiplied by  5 .

Final absolute temperature = (5) x (original absolute temperature) =

                                           (5) x (275.5 K) =

                                             1377.5 K .

The final Celsius temperature is  (1377.5 - 273) = <em>1104.5 °C</em>.


"But those are the choices in the assignment !"
Then the person who wrote the question in the assignment is wrong.
None of the choices they gave is correct.


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Step-by-step explanation:

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