Why do we flip the inequality sign when dividing by a negative coefficient

Sven has 11 more than twice as many customers as when he started selling newspapers. He now has 73 customers. How many did he have when he started?

A six sided die and a standard nickel are tossed. What is the probability that the number of dots on the upper face of the die is a prime number and the nickel lands heads facing up?

the gateway arch in missouri casts a 140 foot shadow while a 18-foot pile casts a 4-foot shadow. How tall is the arch?

What consumer protection agency is known by the acronym FTC

A railroad track rises 30feet for every 400 feet of track. what is the measure of the angle of elevation of the track?

What is the proportional relationship with the table? x 1 2 3 4 y 4 8 12 16 1/4 4 8

What is the final step in the problem solving process

0.35 0.15 0.05 0.05 as fraction

Which expressions are equivalent to 3 (62) ? Select each correct answer. 3 (60 + 2) 3 (6 + 2) 3 (6 + 56) 3 (60 + 20)

George took his friends to a movie. He bought 3 movie tickets that cost x dollars each, and one jumbo chicken sandwhich. The cost 15 dollars less than one movie ticket. which expression represents this situation?