Are these slopes parallel, perpendicular or neither? y = 5/4x + 1 and y = 4/5x + 9

Refer to interactive solution 17.45 to review a method by which this problem can be solved. the fundamental frequencies of two air columns are the same. column a is open at both ends, while column b is open at only one end. the length of column a is 0.504 m. what is the length of column b?

Petes dog weighed 30 pounds it then lost 16% of it's weight how much did pete lose

The height of a plant, in inches, p years after planting it is given by the polynomial function r(p) = -2p% + 270p. find the height of the plant when p = 90 years.