Answer:
4/6 or 2/3...............
Rationalize the numerator:

This is continuous at
, so we can evaluate the limit directly by substitution:

Answer:
2/7 or 3/9
3/9 is greater so the recipe with 3 cups per 9 cup requires more
Step-by-step explanation:

is in the 3rd quadrant... (It is also 210 degrees)
To find the reference angle (which is the distance to the x-axis)

(or 30 degrees)
sin
Answer:
7/1000
Step-by-step explanation: