U= { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9,}
a = { 0, 1, 2, 3,4}
b = { 3, 4, 5, 6, 7}
c = { 6, 7, 8, 9 }
find:
1. a u b
2. (a u b) u c
​

34​% of women consider themselves fans of professional baseball. you randomly select six women and ask each if she considers herself a fan of professional baseball. complete parts​ (a) through​ (d) below. on​ average, out of 6 women would consider themselves baseball fans. the standard deviation is ​women, so in most samples of 6​ women, the number of women who consider themselves baseball fans would differ from the mean by no more than

Activity 6 give more companions

Lucy is thinking of a number, less than 50 ,with the decimal part in tenths.if she switches the tens and the tenths digit, the number increases by 39.6. if she switches the tenths and the ones digit, the number increases by 1.8. what is the original number?