What type of arc lies outside of the central angle and measures more than 180

Select all of the quadrants that the parabola whose equation is y=√x-4 (principal square root) occupies. i ii iii iv

The square pyramid has a volume of 441 cubic inches. what is the value of x? 1/7x is the height x is the base

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