What is the unknown number to ( +4)+59+70

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

Keith runs 5 miles in 38 minutes. at the same rate, how many miles would he run in 57 minutes

Factor this polynomial completely. 12x^2+ x-6