1. a company was studying the demographics of their customers. as part of the study, they collected the following variables: marital status, credit rating (low, medium, high), annual income, and age. label each variable as qualitative or quantitative, discrete or continuous, and nominal, ordinal, or interval/ratio.

matched

Step-by-step explanation:

Variable                              scale of measurement

-Gender                                      nominal scales

-Martial status                             nominal scales

-credit rating                                ordinal scales

( low, medium, high)

-Annual income                            Quantitative

-Age                                               ratio scale

the answer would be 1 1/72

step-by-step explanation:

you can rewrite the equation by separating the parts and then solving individually:

10-9=1

1/8 - 1/9=

find l c d and then combine:

1 1/72