Determine the correct way to model the equation 9x + 2 = 8x + (−6) with algebra tiles. For the left side of the equation:

positive x-tiles

positive unit tiles

For the right side of the equation

positive x-tiles

negitive unit tile

Answer this question! 30 points and brainliest! only if you know the answer.

Which of the following is the result of expanding

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?