Which of the following random variables is geometric? The number of 1s in a row of 50 random digits. The number of tails when a coin is tossed 60 times. The number of digits in a randomly selected row until a 1 is found. The number of diamond cards obtained in a seven-card deal-out of a shuffled deck of 52 cards. The number of 1s when rolling a die 5 times.

A. 90 degrees b. 45 degrees c. 30 degrees d. 120 degrees

The bottom of ignacio's desktop is 74.5cm from the floor. ignacios sits in his adjustable chair, and the tops of his legs are 49.3cm from the floor. each clockwise rotation of the knob on the chair raises ignacio's legs by 4.8cm. write an inequality to determine the number of clockwise rotations, r, ignacio could make with the knob without his legs touching the desk.

Apassenger train and a freight train leave san jose at 3pm, traveling in the same direction. the passenger train is going three times as fast as the freight train. at 6pm they are 240 miles apart. how fast is each travelling? explain your answer and show your