A ladder leans against the side of a house. The angle of elevation of the ladder is 64° when the bottom of the ladder is 7 ft from the side of the house. How high is the top of the ladder from the ground? Round your answer to the nearest tenth.​

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?

If the scale factor between two circles is 2x/5y what is the ratio of their areas?

Ndicate in standard form the equation of the line through the given points. p(0, -4), q(5, 1)