A 15ft. wire is tied to the top of a tree to provide support. If the wire forms a 25° angle with the ground, what is the height of the tree to the nearest hundredth?

Step-by-step explanation:

Given

The length of the wire is

The Wire makes an angle of with horizontal

Suppose the height of the tree is h

From the figure, we can write

Thus, the height of the tree is

he used the algebra tiles correctly.

step-by-step explanation:

given : 3x(2x-1)

solution :

since he used algebra tiles .

armando's solution is the same in the solution shown in figure

as he distributed 2x into x and x and wrote them vertically

and also write   -1 vertically

and 3x into x and x and x and wrote it horizontally

performing the multiplication in the algebra tiles we get

and solving the given expression :

3x(2x-1)

since solving the expression using tiles   and solving the expression algebraically we get the same answer

thus   we can choose the first statement as the answer to this problem which is "he used the algebra tiles correctly".

4 puzzles in 3 hours

step-by-step explanation: