Please help I don’t know these questions

Use the x-intercept method to find all real solutions of the equation.x^3-10x^2+27x-18=0

Consider the integral: 4 0 16 − y2 − 16 − y2 4 1 x2 + y2 dz dx dy . (a) describe w. use the standard view of the x, y, and z axes. front half of a cone with a rounded top. full cone with a flat top. right half of a cone with a flat top. front half of a cone with a flat top. right half of a cone with a rounded top.

The reflexive property of congruence lets you say that ∠pqr ≅