The mean of six numbers is 6.8. find two missing numbers that would make this true. 8.9 ? 12.4? 5.4? 3.2 ?

Find the vertex of the function given below y=x^2-6x+1

Me! i really need to get this right before 9. prove the divisibility of 7^6+7^5-7^4 by 11. use factoring so you get a number times 11. just tell me the number. i need this done asap

Consider the enlargement of the pentagon. what is the value of x, rounded to the nearest tenth? 2.1 centimeters 3.3 centimeters 7.0 centimeters 15.0 centimeters