20. for the data in the following sample:
10, 6, 8, 6,
5
a. find the mean and the standard deviation.
b. now change the score of x = 10 to x = 0, and
find the new mean and standard deviation.
c. describe how one extreme score influences the
mean and standard deviation.

Pete is making decorations for a dinner party. the instructions tell him to use 9 flowers for a medium-sized decoration. complete each statement to adjust the flowers for different-sized decorations based on these instructions.

Which statement accurately explains whether a reflection over the y-axis and a 270° counterclockwise rotation would map figure acb onto itself? a coordinate plane with figure acb with point a at 1, 1, c at 3, 4 and b at 5, 1 yes, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) yes, a″c″b′ is located at a″(1, 1), c″(3, 4), and b″(5, 1) no, a″c″b″ is located at a″(1, 1), c″(4, 3), and b″(1, 5) no, a″c″b″ is located at a″(1, 1), c″(3, 4), and b″(5, 1)

Identify an equation in point slope form for the line perpendicular to y=3x+5 that passes through (4,-1)