What is the circumcenter of any given triangle? a) the point of concurrency of the altitudes of the triangle b) the point of concurrency of the perpendicular bisectors of the sides of the triangle c) the point of concurrency of the bisectors of the angles of the triangle d) the point of concurrency of the medians of the triangle for my answer, i but b is this correct?

2÷6+1/2 to the second power plus one

Asmall (but heavy) particle placed in a glass of water will follow a zigzag motion because the particle will bounce off of the water molecules it meets. this is called brownian motion. a physicist simulates this on a computer, by varying the distance a particle can travel (called the mean free length), on average, before it collides with a water molecule and assigning the change in motion to be one of 8 directions, each with a similar probability. by running the simulated particle (with the same mean free length) many times she determines that it should take 15 seconds, on average, for the particle to fall to the bottom, with a standard deviation of 1.5 seconds. next she lets a real particle fall through a glass of water and finds that it took 18 seconds. what does she conclude, and why?

Read the situations in the table below. then drag a graph and equation to represent each situation. indicate whether each of the relationships is proportional or non-proportional. edit : i got the right answer its attached