If two lines are perpendicular, what must be true about the slopes of the two lines. Select all that apply. .

slopes are the same

Slopes are reciprocals

Slope are whole values

Slopes are opposites (one positive and one negative)

An electronics manufacturer wants to know if customers would be interested in a detachable keyboard for their tables and if so, what the most important features would be. the manufacturer partners with an electronics store to include copies of the survey with every purchase at that store for one week. which of the following best explains why this random sample is unlikely to be a good representative sample of tablet owners' preferences for a detachable keyboard? a) one week is likely not enough time to get a large enough sample. b) most people won't bother to send in the survey, which is likely to skew the results c) there is no way to verify whether the responders to the survey actually own a tablet d) the survey is biased because it was conducted through an electronics store, not the general population

2(n-1)+4n=2(3n-1)n=0no solutioninfinitely many solutions n= - 4 !

Me, the vertices of quadrilateral coat are c(2,0), o(7,0), a(7,2) and t(2,2). prove that coat is a rectangle.