Find the value for x and the measure of angle 2.

The sum of two numbers is 12 and their difference is 18 what are the two numbers

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

What are the values of each variable in the diagram below?