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Mandarinka [93]
3 years ago
10

HELP ME HELP ME HELP ME

Mathematics
1 answer:
harina [27]3 years ago
5 0

The constant of proportionality is: 0.2 and the equation is: c = 0.2t

Step-by-step explanation:

Let t be the number of texts and c be the cost

Then according to given statement

c ∝ t

The proportionality symbol will be removed and a constant f proportionality will be introduced.

c = kt

<u>For constant of proportionality:</u>

3.20 = k * 16\\k = \frac{3.20}{16}\\k = 0.2

Hence the constant of proportionality is 0.2

<u></u>

<u>Equation:</u>

<u></u>c = 0.2t<u></u>

Hence,

The constant of proportionality is: 0.2 and the equation is: c = 0.2t

Keywords: Proportion, fractions

Learn more about proportion at:

  • brainly.com/question/12967961
  • brainly.com/question/12980135

#LearnwithBrainly

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My name is Ann [436]

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rate of the plane in still air is 33 miles per hour and the rate of the wind is 11 miles per hour

Step-by-step explanation:

We will make a table of the trip there and back using the formula distance = rate x time

                 d              =            r       x       t

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               d            =         r        x        t

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It tells us that the trip there is with the wind and the trip back is against the wind:

           

              d           =        r         x        t

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back      132       =     (r - w)

Finally, the trip there took 3 hours and the trip back took 6:

           

             d         =        r        *        t

there    132     =    (r + w)     *       3

back     132     =    (r - w)      *       6

There's the table.  Using the distance formula we have 2 equations that result from that info:

132 = 3(r + w)        and        132 = 6(r - w)

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132 = 3r + 3(11) and

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2 years ago
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