Cho x, y,z thõa mãn xy+yz+zx=1 tìm gtnn của biểu thức x^4+y^4+z^4

Consider the line y = -3/-2 x +6. find the equation of the line that is perpendicular to this line and passes through the point (-9,-3). find the equation of the line that is parallel to this line and passes through the point (-9,-3).

Fredrick designed an experiment in which he spun a spinner 20 times and recorded the results of each spin

5. which description does not guarantee that a quadrilateral is a squar ajo is a parallelogram with perpendicular diagonals 0% has all sides congruent and all angles congruent o has all right angles and has all sides congruent 10% is both a rectangle and a rhombus 30%