How many variable terms are in the expression 3x3y + 5xz − 4y + x − z + 9? (Input a numeric value only.)

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?

Which expression gives you the distance between the points (5,1)and(9,-6)

The number of fish in a lake can be modeled by the exponential regression equation y=14.08 x 2.08^x where x represents the year