Answer:
C. 
Step-by-step explanation:
You can use the formula to find the slope: 
(-1.5, 1.5) & (1.5, 0)

The slope is 
Calculate the circumference of the full circle:
circumference = PI x diameter = 3.14 x 20 = 62.8 inches
the arc length is 160 degrees of the full circle
divide 160 by 360 (full circle) and multiply by the circumference:
160/360 x 62.8 = 27.9 inches
Answer:
D.Cup
Step-by-step explanation:
We humans do not use the term Cup anymore. We now use things like Grams,Ounces,Gallons,Or Quarts.
Answer: No, because an identity is an equation that is always true and cos(theta) - sin(theta) does not always equal 1.
Hope this helped! :)
Just do this to find the percentage:
13/25 * 100%
= 0.52 *100%
= 52%