Agroup of 10 girls and 6 boys from the sophmore class board are in charge of the 2005 prom. in how many ways can they elect a president, vice president and treasurer

Iwill give ! if m∠a=59 and m∠3=81°, what is m∠b? m∠b= _[blank]_°

Offering 30 if a plus b plus c equals 68 and ab plus bc plus ca equals 1121, where a, b, and c are all prime numbers, find the value of abc. the answer is 1978 but i need an explanation on how to get that.

Aline passes through 3,7 and 6,9 what equation represents the line