Which expression is undefined? O -8=(-8) O-8=8 O 0-8 O 8-0 Mark this and return Next com/ContentViewers/AssessmentViewer /Activit... O

Helena lost her marbles. but then she found them and put them in 44 bags with mm marbles in each bag. she had 33 marbles left over that didn't fit in the bags.

How can you find the mean absolute deviation (mad) for this set of data?

Prove the following(cot0+cosec0)[tex](cot0 + cosec0) { }^{2} = \frac{1 + cos0}{1 - cos0} [/tex]