Eight pens cost $9.20. what is the unit price? __ per pen?

Plz ( true - false) all triangles have interior angles whose measure sum to 90.

Which of the following vectors are orthogonal to (2,1)? check all that apply

Select the correct answer from each drop-down menu. james needs to clock a minimum of 9 hours per day at work. the data set records his daily work hours, which vary between 9 hours and 12 hours, for a certain number of days. {9, 9.5, 10, 10.5, 10.5, 11, 11, 11.5, 11.5, 11.5, 12, 12}. the median number of hours james worked is . the skew of the distribution is