Justify whether the following subsets are subspaces of R 2×2 or not: • (1 point) The subset S, consisting of matrices with the entry a12 = 1. • (2 points) Fix a matrix A in R 2×2 . Define the subset S := {B ∈ R 2×2 : AB = O} where O is the zero matrix.

Umm.. just started this 2day and its not on my notes(p′︵‵。)

Ascatterplot is produced to compare the size of a school building to the number of students at that school who play an instrument. there are 12 data points, each representing a different school. the points are widely dispersed on the scatterplot without a pattern of grouping. which statement could be true

Create a data set with 8 points in it that has a mean of approximately 10 and a standard deviation of approximately 1.