10/8 as a whole number or mixed number

What is the perimeter of a rectangular building that is 80 feet wide and 140 feet deep?

To determine the number of deer in a forest a forest ranger tags 280 and releases them back

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