Can someone help me with geometry?

Writing the simplest form of a fraction means the numerator and the denominator have no common factors other than 1.a. trueb. false

According to the data set, where should the upper quartile line of the box plot be placed?

Which sum or difference identity would you use to verify that cos (180° - q) = -cos q? a.) sin (a -b) = sin a cos b – cos a sin b b.) cos (a -b) = cos a cos b – sin a sin b c.) cos (a -b) = cos a cosb + sin a sin b d.) sin (a + b) = sin a cos b + cos a sin b