Based on Pythagorean identities, which equation is true?
sin^2 theta-1=cos^2theta
sec^2theta-tan^2theta=-1
-cos^2theta-1=sin^2theta
cot^2theta-csc^2theta=-1

Which of the following is most likely the next step in the series? a3z, b6y, c9x, d12w, е15v, f18u

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

The graph shows the distance kerri drives on a trip. what is kerri's speed . a. 25 b.75 c.60 d.50