Ann cleans an apartment in 12 hours and liz cleans an apportment in 18 hours. how long would it take to clean an appartment together?

When only separate discreet points are graphed it is called?

If 3x+8=3x+8 is it one solution or no solution

Kayla wants to find the width, ab, of a river. she walks along the edge of the river 65 ft and marks point c. then she walks 25 ft further and marks point d. she turns 90° and walks until her location, point a, and point c are collinear. she marks point e at this location, as shown. (a) can kayla conclude that δ and δ are similar? why or why not? (b) suppose de = 15 ft. what can kayla conclude about the width of the river?