A geometric pattern is made using 17 triangles and squares. If the triangles and squares have a total of 64 sides, how many triangles were used?

13 triangles were used.

Step-by-step explanation:

Each triangle has 3 sides where each square has 4 sides.

Total triangles and squares = 17

Total sides they have = 64

Let x= Number of triangles , y= Number of squares

3x = sides of all triangles , 4x = Sides of all squares.

Now,

Multiply 3 on both sides of (i) , we get

Eliminate (ii) from (ii)

x= 13

Put this in (i), we get

Hence, 13 triangles were used.

215.92 dollars is the answer

in the attachment.   i didn't see your choices.   the word which means there is choices.

step-by-step explanation:

(x,y)

x tells you how much left or right you go from the origin

y tells you how much down or up you go from the origin

so for example (-3,2), you go left 3 and up twice. i denoted which of the ordered pairs is which in my graph.