Can orthocentre of an obtuse triangle lie below the triangle or it has to be above the triangle?

Factor this polynomial completely x^2-64

An initial investment of $100 is now valued at $150. the annual interest rate is 5%, compounded continuously. the equation 100e0.05t = 150 represents the situation, where t is the number of years the money has been invested. about how long has the money been invested? use your calculator and round to the nearest whole number. years

Iwill give you ! what is the measure of ∠v ?