Pauline sits near the snacks in the office. There are 555 flavors of chocolate, and she wonders if some flavors get chosen more than others. She plans to record how often each flavor gets chosen in a sample of selections to carry out a \chi^2χ 2 \chi, squared goodness-of-fit test on the resulting data. Which of these are conditions for carrying out this test? Choose 2 answers: Choose 2 answers: (Choice A) A She observes each snack being selected at least 555 times. (Choice B) B She expects each snack to be selected at least 555 times. (Choice C) C She takes a random sample of selections. (Choice D) D She samples at least 303030 selections.

answer: there are x+184 pages in olivia's book.

step-by-step explanation:

let the total number of pages in the book which olive has already read be x.

then if olive has 184 pages left to read, then the total number of pages are in olive's book= pages she has read+pages she has left to read

therefore, the total number of pages in olivia's book=

hence, there are x+184 pages in olivia's book.

(0,-3) see attached graph

step-by-step explanation:

a. to solve the system, graph the two equations.

x = y+3 becomes y=x-3 has m=1/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move up 1 unit and 1 unit to the right. plot a point and connect.

y=-4x+3 has m =-4/1 and b=-3. start at (0,-3) on the y-axis and plot a point. then move down four units and to the right 1 unit. plot a point and connect.

the solution is the point (x,y) where the two lines intersect. by the graph below it is (0,-3).

b. to solve by substitution, substitute y = -4x-3 into x= y+3

x= (-4x-3) +3

x=-4x

5x=0

x=0

now substitute x = 0 back in to find y.

y= -4(0)-3

y=0-3

y=-3

solution is (0,-3)

c. use elimination by adding the equations together.

x-y=3

4x+y=-3

5x=0

x=0

then substitute into one equation to find y.

y=-4(0)-3

y=-3

jwjwkwkwkkkdjebd b jdjejdndj he jenej

step-by-step explanation:

the true ones are a b and d