Convert 102.221four to base ten

Anyone know? is appreciated! will mark brainliest if correct!

Aflower has 26 chromosomes. to create a new flower,how many would a sperm cell have what is called?

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