why the columns of an LaTeX: m\times n matrix can never span LaTeX: \mathbb{R}^m if there are more rows than columns

Pepe is going to spin the following spinner 800 times. the spinner is divided into equal sections.a. exactly 160 timesb. clost to 160 times but probably not exactly 160 timesc. exactly 640 timesd. close to 640 times but not probably not exactly 640 times. me

Two lines parallel to a third line are parallel to each other. always sometimes or never

Find the average speed of a rabbit that runs a distance of 22 m in a time of 1.8 s .