What is the value of c such that x^2 — 12x + c is a perfect-square trinomial?

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

If the wwight of a package is multiplied by 7/10 the result is 65.8 find the weight of the package

Find the measure of angle b in the following triangle