Consider an mtimesn matrix A. Which of the subspaces Row Upper A, Co l Upper A, Nu l Upper A, Row Upper A Superscript Upper T, Co l Upper A Superscript Upper T, and Nu l Upper A Superscript Upper T are in set of real numbers R Superscript m and which are in set of real numbers R Superscript n? How many distinct subspaces are in this list? Select each subspace that is in set of real numbers R Superscript m.

Reduce fractions expressing probability to lowest terms. in 3,000 repetitions of an experiment, a random event occurred in 500 cases. the expected probability of this event is?

Which expression is equal to (21)(7)(3x) using the associative property? (21 · 7 · 3)x (7)(21)(3x) 32(7 + 3x) (3x)(7)(21)

An office supply company conducted a survey before marketing a new paper shredder designed for home use. in the survey, 80 % of the people who tried the shredder were satisfied with it. because of this high satisfaction rate, the company decided to market the new shredder. assume that 80 % of all people are satisfied with this shredder. during a certain month, 100 customers bought this shredder. find the probability that of these 100 customers, the number who are satisfied is 69 or fewer.