Ihave two simple questions answer them correctly its 10pts and brainiest.

Add the fractions and simplify 1/2+ 1/3

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?

What is the slope of the line that contains the points (-5, 6) and (14. - 7)?