A trapezoid has a median length of 30 and height 12. What is the area?

15 points

4. find the geometric mean of 4 and 12. 24 8

Express in the simplest form: (x^2+9x+14/x^2-49) / (3x+6/x^2+x-56)

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