Lili has 20 friends. Among them are Kevin and Gerry, whoare husband and wive. Lili wants to invite 6 of her friends to her birthdayparty. If neither Kevin nor Gerry will go to a party without the other, howmany choices does Lili have?

18

Step-by-step explanation:

if neither wants to go, from 20 it will be 18

step-by-step explanation:

descending order means to order the polynomials from the term with the largest exponent to the term with the smallest exponent.  

therefore, the correct answer is d.  

answer: .64

step-by-step explanation

set up the formula for standard deviation for this set of numbers, then simplify