Solve for x with 0<X<2pi
2 cos^2x - 3 cos x= -1

Which of the following correctly justifies statement four of the two column proof? a. corresponding angles theorem b. transitive property of equality c. vertical angle theorem d. substitution property of equality

What is the quotient of m^6/5 ÷ 5/m^2? assume m does not equal pl

Asurvey of 2,000 doctors showed that an average of 3 out of 5 doctors use brand x aspirin.how many doctors use brand x aspirin