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Which ordered pair is a solution to the system of linear equations? 2x + 3y= 6 –3x + 5y = 10

Simplify 15(x - 4)(x -1)-3(x + 4)(x - 1) with steps

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?