If using the method of completing the square to solve the quadratic equation x^2+13 -27=0, which number would have to be added to "complete the square"?

1mile equals approximately 1.6 kilometers. which best approximates the number of miles in 6 kilometers?

Rena is building a 1: 180 scale model of a real castle. her model has a rectangular base that is 3 feet wide and 4 feet long what is the area of the base of the actual castle in square feet

Will mark determine whether the conjecture is true or false. give a counterexample for any false conjecture. given: points r, s, and t conjecture: r, s, and t are coplanar. a) false; the points do not have to be in a straight line. b) true c) false; the points to not have to form right angles. d) false; one point may not be between the other two.