A rectangle has a perimeter of 30. It is dilated by a scale factor of 2.
What is the new perimeter?

What number produces an irrational number when multiplied by -1.25

Which is the equation of an ellipse with directrices at x = ±4 and foci at (2, 0) and (−2, 0)?

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.