Keratin has 32 books.
This is because Maritza has 64, and Hermine has 17.
Total, they have 113 books in all. :)
Answer:
-1.75
Step-by-step explanation:
The z-score = (n - m) / d where n is the value (13) m = mean and d = standard deviation.
= (13 - 20) / 4
= -1.75 (answer)
Answer:
It won't work.
Step-by-step explanation:
AB = 180
5y + 3y + 2y + 2y = 180
12y = 180
y = 15
Check the answer by substituting:
5(15) + 3(15) + 2(15) + 2(15)
75 + 45 + 30 + 30 = 180