Our physics club has 20 members, among which we have 3 officers: President, Vice President, and Treasure. However, one member, Alex, hates another, Bob. How many ways can we fill the offices if alex refuses to serve as an oficer if alex refuses to serve as an officer if bob is also an officer

What is the rule for reflection across the y axis

Jordan rides his bike 6 7/15 miles every day to deliver newspapers and to go to and from school. if his ride to and from school is 4 3/10 miles, how many miles is the trip to deliver newspapers? 1 1/3 1 1/6 2 1/6 2 4/5

Aplane is taking off from bangladesh headed to new york city. at the same time, a plane from new york city is headed to bangladesh is also taking off. the plane bound to new york city is traveling at 600 mph, while the plane traveling to bangladesh is traveling at 400 mph. how far from new york city will the two planes meet if the distance between new york city and bangladesh is 8,000 miles?