Find the 13th term of the geometric sequence 1,−2,4

What is the relationship between all triangles that can be drawn given the same three angles

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

Ab and bc are tangent to circle d. find x is ab = 3x + 8 and bc = 26. find x