suppose that x is the number of bears spotted by tourists to banff, canada. the table below is the probability distribution for x. what is the expected value of x, that is, what is the mean of its distribution?

Find the equation of the trend line (line of best fit). show your work i'm using the points (34,76) (42,91)

Which expression is rational? 6. , square root two, square root 14, square root 49

I've been working on this for a few days and i just don't understand, it's due in a few hours. you. the direction of a vector is defined as the angle of the vector in relation to a horizontal line. as a standard, this angle is measured counterclockwise from the positive x-axis. the direction or angle of v in the diagram is α. part a: how can you use trigonometric ratios to calculate the direction α of a general vector v = < x, y> similar to the diagram? part b suppose that vector v lies in quadrant ii, quadrant iii, or quadrant iv. how can you use trigonometric ratios to calculate the direction (i.e., angle) of the vector in each of these quadrants with respect to the positive x-axis? the angle between the vector and the positive x-axis will be greater than 90 degrees in each case. part c now try a numerical problem. what is the direction of the vector w = < -1, 6 > ?