Answer: The answer here is 45* because all you need to do is 180-72-63 then BAM you get your answer :)
Where is it? In order to help you I need to see what the problem is.
I think the answer is B.78Degrees
You should download Mathpro
Her rate of reading was = 51/2 /12 = 51/24 per hour
It means she red 51/24 pages in one hour
