5/2x2+5x-3 - x+6/3x2+5x-3 subtract the binomials

What basic trigonometric identity would you use to verify that csc x sec x cot x = csc^(2)x

Find the volume of the described solid.the solid lies between planes perpendicular to the x-axis at x = 0 and x=7. the cross sectionsperpendicular to the x-axis between these planes are squares whose bases run from the parabolay=-31x to the parabola y = 30/x.a) 441b) 147c) 864d) 882

In a class, there are 12 girls. if the ratio of boys to girls is 5: 4 how many boys are there in the class