Find the first quartile and third quartile of data given below: C I 20-30 frequency 10
CI 30-40 frequency 8
CI 40-50 frequency 9
CI 50-60 frequency 10
CI 60-70 frequency 9
CI 70-80 Frequency 4
where ci is class interval

What is the equation of a line passing through (-6,5) and having a slope of 1/3

Write the standard form of an equation with (see picture below)

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 > ?