What property justifies the following statement?

If 4x+6=20, then 4x=14.

Flying against the wind, a jet travels 4400mi in 8 hours. Flying with the wind, the same jet travels 5820mi in 6 hours. What is the rate of the jet in still air and what is the rate of the wind?

What's the x? 12x+8=32

30% of the people at a concert are female. 1295 of the people at the concert are male. Work out the number of people at the concert who are female

Ticked for a cinema cost £a for adults and £c for children. 2 adults and 3 children cost £42.70. 3 adults and 5 children cost £67.30. A) use the information to write two simultaneous equations in a and c.

A padlock has a 4 digit key code

A rectangular prism has a volume of 100 cubic meters. One of the dimensions is 5 meters. Which pair of measurements could be the other two dimensions of the prism? 1. length = 5 meters, width = 4 meters 2. length = 5 meters, width = 5 meters 3.

There are five people sitting around the dinner table. Each person has 2/10 of a pie on their plate. How much pie is left? Explain

Aria is going to a carnival that has games and rides. Each game costs $3.50 and each ride costs $5. Aria spent $42 altogether at the carnival and the number of rides she went on is 5 more than the number of games she played.

An urn contains 9 red balls and 8 green balls. if vince chooses 11 balls at random from the urn, what is the probability that he will select 5 red balls and 6 green balls?

What are the sum measurements for nonagon