While baking, hannah discovered a recipe for cookies that required 3/4 cups of sugar for every 2+1/4 cups of flour. how many cups of sugar will she need for 4 cups of flour?

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  1 1/3 cups of sugar

Step-by-step explanation:

We can write a proportion for the sugar and flour Hannah is using:

  sugar / flour = (3/4)/(2 1/4) = x/4

Multiplying by 4, we have ...

  x = 4(3/4)/(2 1/4) = 3/(2 1/4) = 3×(4/9)

  x = 4/3 = 1 1/3

Hannah will need 1 1/3 cups of sugar for 4 cups of flour.

the answer is (4,3)

since the rule for r0, 90º is (-y,x) and it was already applied to form the image, all you have to do is reverse the answer using this formula.

chemists are often responsible for designing a chemical reaction and analyzing the products obtained from it. one significant part of designing a chemical reaction is determining the amount of each reactant that is needed and the amount of each product that will be produced. in order to do so, chemists use stoichiometry, the quantitative relationships between reactants and products.