How many four digit numbers may be formed using the elements from the set {1, 2, 3, 4, 5, 6, 7} if no elements can be repeated in the number?

Why is 4 laps in 10 minutes and 6 laps in 15 minutes proportional

Match each statement with its corresponding value for the system below: y = -2(3)x and y = 9x - 2 1. the number of points of intersection. -2 2. the x-coordinate of the solution. 1 3. the y-coordinate of the solution. 0

Sanya noticed that the temperature was falling at a steady rate of 1.4 degrees every hour from the time that she first checked her outdoor thermometer. by 6 a.m., the temperature had fallen 21 degrees. which expression can you use to find how many hours earlier she had first checked the thermometer?