Joe wrote this expression to describe the number of tickets he gave to his friends.

10 - t

which situation could be described by this expression?

a. joe knows he has 10 tickets left. he does not know how many tickets he gave away.

b. joe knows he started with 10 tickets. he does not know how many tickets he gave away.

c. joe knows he gave away 10 tickets. he does not know how many tickets he has.

d. joe knows he has 10 tickets left. he knows he gave away half of his tickets.

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 > ?