If angle m 9 =119,what is the sum of the measures of angle 11 and 16

What is the standard form of -5x^2+2x^4-11+x^3+3x

Which of these tables represents a non-linear function?

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?