What is the mode of the following number 9,8,7,1,1

What scale factor was applied to the first rectangle to get the resulting image interior answer as a decimal in the box

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?

The ratio of the measures of the three angles in a triangle is 2: 9: 4. find the measures of the angels