Atree casts a shadow that is 24 ft long. a 4-ft tall young boy casts a shadow that is 3 ft long. the two triangles created are similar. how tall is the tree?

Which of the expressions (on the photo document i inserted) together represent all solutions to the following equation? 8cos(12x)+4=-4 *the answer should be in degrees.* > i would like for someone to explain the process to find the solutions for this.

Factor completely. 4p^2 + 36p + 81 express the answer in the form (ap + b)^2

Ahiker stands at an unknown elevation before he ascends 2 miles up a mountain to an elevation of 9 miles. find the elevation of the hiker before his ascent.