You are writing a mathematics textbook, and one of the problems you write is the following:
âlet a be the set of moviegoers who like sci fi movies, let b be the set of moviegoers who like zombie apocalypse movies, and let c be the set of moviegoers who like childrenâs movies. express the following in symbols: the set of all moviegoers who like either sci fi movies or zombie apocalypse movies, but not childrenâs movies.â
(i) give the answer to the problem above.
(ii) the editor removes the comma in the last sentence and inserts a comma after âsci fi movies.â what effect, if any, does this have on the correct answer?
(iii) comment on what would happen if there were no commas in the last sentence

option a.

step-by-step explanation:

if you look closely at the graph, we can notice that the function is not defined at two different points.

if you look at functions b and c, you will notice that both functions are not defined at just one point. the function b is not defined at x= -5/2 and function c is not defined at x=-5. both options are discarded, given that our function should not be defined at two fiferent points.

now, if you look closely at the graph you will notice that the function sketched is not defined at x=5 and x=-2.

f

step-by-step explanation:

f

solution:

as, mean is defined as sum of all the observations divided by total number of observations.

and , median is mid value of the data whether arranged in ascending order or descending order.

consider, roadsters:

2,3,4,5,6,7,8,9

mean =

also, median= , because number of observations is even, so median is mean of two mid values.

now, coming to bandits

2,3,4,5,6

mean =  

median = 4, as number of observations is odd.

so, roadsters has greater median as well mean than bandits.

→option a is true about the repairs performed on 2 types of cars:

bandits have lower median and mean than roadsters.

the smallest possible measurement of the width is 14 feet

step-by-step explanation:

let's assume length of parallelogram is 'l'

width of parallelogram is 'w'

the perimeter of a parallelogram must be no less than 40 feet

so, we get

we are given

length of parallelogram is 6 feet

so,

l=6

we can plug it

now, we can solve for w

subtract both sides by 12

divide both sides by 2

and we get

so,

the smallest possible measurement of the width is 14 feet