Are rational numbers closed under addition, subtraction, multiplication, and division?

State whether weight is a function of height for the six students and explain. a. yes, height is a function of weight because two students weigh 165 pounds but have different heights. b. no, height is not a function of weight because two students weigh 165 pounds but have different heights. c. yes, weight is a function of height because for each value of height there is one corresponding value of weight. d. no, weight is not a function of height because there is not enough data to determine a function.

Acircle has a circumference of 28.36 units what is the diameter of the circle

Solve 3x-18=2y and 5x-6y=14 by elimination or substitution . show all !