4. a dog is standing 5 feet from the base of a tree, looking up at a cat that has climbed 16 feet up the
tree. what is the angle of elevation from the the point the dog is standing on the groud to the cat?
gina wilson (all things algebra, 2014

72 degrees

Step-by-step explanation:

In a right angled triangle, the angle of elevation is the dog on the ground looking up to the tree. Your base of the triangle is 5ft (adjacent side) and your opposite side is 16ft. Because you have your opposite and adjacent sides, you use the "Tan function"

Tan 16/5=3.2

To get the angle, use the inverse:

Tan^-1 (3.2)= 72 degrees

Hope this helps

answer: a video game has three difficulty levels: easy, medium, and expert. the game's scoring works in such a way that a player has to score a fixed number of points to advance to the next level, and then the scoring starts over. the total score needed to clear all three difficulty levels is 7,500. two times the number of points needed to clear the easy level is 500 more than the number of points needed to clear the medium level. twice the number of points needed to clear the medium difficulty level is 1,500 more than the number of points needed to clear the expert level. if x, y, and z represent the easy, medium, and expert levels, respectively, and a is the coefficient matrix of the system of equations modeling this situation, identify the inverse matrix, a-1, and the solution matrix, x, of the system of equations.

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rauschg

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