100 POINTS

A company has 25 employees. One day, 8 letters that did not have names on the envelopes arrived for 8 different employees. The mail sorter placed each letter randomly in a different employee's mailbox.

Which expression represents the probability that all of the letters went to the correct employees?

Which of the following is the equation of a line that passes through the point (1,4) and is parallel to the x-axis a. y=1 b. y=4 c. x=1 d. x=4

Identify the converse of the following conditional: if a point is in the first quadrant, then its coordinates are positive. if the coordinates of a point are not positive, then the point is not in the first quadrant. if the coordinates of a point are positive, then the point is in the first quadrant. if a point is in the first quadrant, then its coordinates are positive. if a point is not in the first quadrant, then the coordinates of the point are not positive.

Which equation results from adding the equations in this system? x+6y=9 and -x+2y=-15