To specify how many cups of flour should be used in a bread recipe, the value given should be a positive rational number (as using flour typically requires a positive quantity).
From the options provided, let's examine each one:
- Square root of 3 - This is an irrational number and doesn't specify a clear measurement for cups.
- 47 - This is a positive integer and could represent 47 cups of flour, which is acceptable in a recipe.
- Start Fraction 4 over 7 End Fraction (4/7) - This is a positive rational number and is acceptable as it specifies 4/7 of a cup of flour.
- −3 (negative 3) - This is a negative number and is not sensible for measuring flour in a recipe, so it's not acceptable.
- 234 - This is a positive integer and is acceptable; it specifies 234 cups of flour.
- 2 Start Fraction 3 over 4 End Fraction (2 3/4) - This is a positive rational number and is also acceptable, specifying 2 and 3/4 cups of flour.
So, the options that could be used to specify how many cups of flour should be used in a bread recipe are:
- 47
- 4/7
- 234
- 2 3/4
Thus, the correct answers are:
- 47
- 4/7
- 234
- 2 3/4