What is the variance of the data set? Round to the nearest
hundredths.
A store manager is looking at past jewelry sales to
determine what sizes of rings to keep in stock. The list
shows the ring sizes purchased by the last ten jewelry
customers.
9,7, 6.5, 7.5, 7, 8, 5, 6, 7.5, 8

answer:

7, and -7

Step-by-step explanation:

you find the mean, median, and mode, then you subtract 7 from the mean, and multiply it by 4

you get 7, then square root it and raise it to the power of 90000000, and you get 1.375*10^931 and you divide it by 349485859 to get 7, but you also need -7

127

whether it's diameter, or radius, i believe if i remember correctly from school, every amount has to always add up to 180. so if you take 53, and starting adding, long story short, taking 127 and adding it to 53, gives you 180.

22, 28, 34, 40, 46

b)   f(n) = 6n + 16

n = what is the number of the row ( 22 would be row 1) so if we replaced n with 1, we would get 22

c)   the 14th row will have 100 seats

(1)   (2)   (3)   (4)   (5)   (6)   (7)   (8)   (9)   (10) (11) (12) (13) (14)

22 | 28 | 34 | 40 | 46 | 52 | 58 | 64 | 70 | 76 | 82 | 88 | 94 | 100