It takes 20 minutes for 5 people to paint 5 walls. How many minutes does it take 9people to paint 9 walls?

20 minutes because 9/9 is simplified to 1 as 5/5 is simplified to 1

Answer to your question: a. the fundamental theorem of algebra tells you that the equation will have two complex roots since the degree of the polynomial is 2. the roots are ​ x=1±i7√2 .number of roots=degree of polynomialhere, degree of polynomial is 2 so number of roots will be 2.hope it *_*