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Nadya [2.5K]
3 years ago
15

Josie is making pizza dough. Complete the double number line by filling in the missing values. Then write an equation that model

s the relationship between the total cups of flour, c, and number of batches, n. Show your work.

Mathematics
1 answer:
coldgirl [10]3 years ago
5 0

Answer:

First part:

To complete the top number line use the numbers

          1\dfrac{1}{2}  

and

          2\dfrac{1}{4}

To complete the bottom number line use the numbers:

  • 3, and
  • 4

Second part:

The relationship between the total cups of flour, c, and number of batches n, is:

        c=\dfrac{3}{4}n

Explanation:

Find the complete question if the file attached.

First part.

The number line on top shows the number of cups of flour, c.

Each mark corresponds to 3/4 of cups. Thus the numbers that complete the number line are:

       \dfrac{3}{4}+\dfrac{3}{4}=\dfrac{6}{4}=\dfrac{4}{4}+\dfrac{2}{4}=1+\dfrac{1}{2}=1\dfrac{1}{2}

      1\dfrac{1}{2}+\dfrac{3}{4}=1+\dfrac{1}{2}+\dfrac{3}{4}=\dfrac{4}{4}+\dfrac{2}{4}+\dfrac{3}{4}=\dfrac{9}{4}=\dfrac{8}{4}+\dfrac{1}{4}=2+\dfrac{1}{4}=2\dfrac{1}4}

The the two numbers that complete the top number line are:

          1\dfrac{1}{2}  

and

          2\dfrac{1}{4}

The bottom number line models the number of batches of dough, n.

Each mark corresponds to one unit, i.e. one batch.

Thus, the missing values are:

  • 2 + 1 = 3, and
  • 3 + 1 = 4.

Second part. Find the relationship between the total cups of flour, c, and number of batches n.

The relationship is indicated by the marks that are at equivalent position:

You can notice that you must multiply the number of batches, n, by 3/4 to get the number of cups of flour, c, that correspond to the same position:

 For instance:

         1\times \dfrac{3}{4}=\dfrac{3}{4}

        4\times \dfrac{3}{4}=3

Therefore,

       c=\dfrac{3}{4}n

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