Will give brainlest award for most descriptive
solve for x using cosine law

x^2 = 5^2 + 10^2 - (2*5*10*cos60)

Click on the graphic until the one that best represents the statement is shown. two nonintersecting planes.

If 1 is divided by the sum of y& 4. the result is equal to 3 divided by 4 .find the value of m?

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?