Given that triangle JKL has vertices at J(10,7), K(6,11), and L(5,9), find the coordinates of the centroid. Use parenthesis and enter your answer as an ordered
pair.

Seymour is twice as old as cassandra. if 16 is added to cassandra’s age and 16 is subtracted from seymour’s age, their ages become equal. what are their present ages? show !

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30

Astudent was asked to find the square of 7x+3. the student quickly wrote (7x+3)^3= 49x^2+9. identify the student's error and provide the correct answer.